I think you need a Tualatin compatible board for this cpu. Asus tusl2-c is a good one but there are many others.

There used to be a VIA C3 compatibility list on their website, but it appears the page is gone now.
It wasn't very helpful though as it didn't list which chip was compatible with which board though, but in theory Tualatin board should be compatible, but I don't know of any way for sure.

I do know that I once tried a Nehemiah in a non-Tualatin board which in fact did support the needed lower voltage and it did complete post with the correct voltage applied to the CPU but I think I ran into some problem later and never bothered to try again as I had other options anyway (I had regular Tualatin boards and this was just to relieve me of my curiosity 😁 ).

I'll go check if I can find that list somewhere as it might help you cut down the list of potential boards to try if the board doesn't officially support C3.

matze79 wrote:

i'm searching for a Mainboard for a 1,4Ghz Nehemiah C3,

You actually have one of these chips? In PGA format?

I'm mistaken, its a 1.2Ghz Chip, yes i have one.
it has a C5P Core with 2x RNG and ACE, also supporting SMP.

i already tried a tualatin board from Asus (TUSL) and it doesnt go beyond POST, just memory count and end.

Ok, I got some bad news and some good news.

First the bad: I can't find the list that was on VIA's website and at first sight it appears no other website bothered to copy it's information.
Also this website http://www.cpu-upgrade.com/cgi-bin/MB_Chart.pl might have some relevant information, but as far as I can see I'd have to go through all the motherboard models one by one 🤣

Now for the good news: I found that I downloaded the list from VIA's website, so I'll just go and copy it's content right here. It's not perfect, but it's a start, hold on...

Ok, I copied the list to notepad and formatted it a bit to make it easier to read.
Just be warned though, I tried looking for definitive and clear information about the compatibility of the various incarnations of the chip VIA sold as C3, but it was hard to find anything conclusive, so I just gathered any information I could find.
Use at your own risk!

VIA C3 Verified Motherboard List

ABIT
VH6 694X + 686A
VL6 693A + 686A
VM-21 PM133 + 686B

Acorp
6A815E1 815E (B stepping)
6A815EP1 815E (B stepping)
6A815ES 815E (B stepping)
6A815EPS 815EP(B stepping)
694TA 694T+686B
6Pro266TA VIA Pro266T+8233
6M815E Intel 815E
6M810E Intel 810E
694XA VIA 694X+686B
694XT1 VIA 694X+686B
6VIA85X VIA 694X+686B
693AP VIA 693A +686B
6VIA82P VIA 693A+596B
6VIA85P VIA 693A+596B
6PMA VIA 8605+686B
6PLEF VIA 8601A+686B
6V8633A VIA 8633+8233
6A815EPD Intel 815EP
6PLEF PLE133 + 686B
6VIA83B 693A + 596B
694XT 694X + 686A
694TA 694T + 686B
6VA694T+ 694T + 686B

AOPEN
MX36LE 8601A + 686B
MX36LE-UN 8601T + 686B
MX36LE-U 8601T + 686B
MX3W Pro Intel 810
MX36LE-UN 8601T + 686B
MX36LE-U 8601T + 686B
MX36LE PLE133 + 686B
MX36 PM133 + 686A

ASUS
TUSL2 Intel 815E-Bstep/ICH2
TUSL2-C Intel 815EP-Bstep/ICH2
TUSL2-M Intel 815E-Bstep/ICH2
TUEG-VM Intel 815EG/ICH2
TUWE-M Intel 810E2/ICH2
CUV266-DLS/-D VIA8633/8233
TUV4X VIA694T/686B
CUV4X-DLS/-D VIA694XDP/686B
CUPLE-VM VIAPLE133/686B
CUVL-VM VIAPL133/686B
TUA266 ALiM1651T/1535D+
TUSI-M SiS630ET
TUA266 Ali M1651T +M1535D+
CUPLE-VM PLE133 + 686B
CUWE-RM Intel 810E
CUV4X 694X + 686A
CUV4X-M 694X + 686A
CUSI-FX SIS630E
CUV4X-V PM133 + 686A

AZZA
693ATX 693A + 686A
810DMC Intel 810
601BM PLE133 + 686B
694AX 694X + 686A

Biostar
M6TSU Intel 815EP
M6TWO Intel 810E
M6TWL Intel 810E
M6VCT VIA 694T+686B
M6VLQ VIA PLE133T/686B
M6TSS Intel 815EP
M6VCH 693A 693A + 686A
M6VCI 693A + 686A
M6VLB PLE133 + 686A
M6TWJ Intel 810
M6TWG Intel 810
Chaintech 6OJA3T Intel 815EP
6OIA3T Intel 815EP
6AIV2T VIA PLE133T/686B
6VIA5T VIA 694T+686B
6AJA4T VIA 694T+686B
6VJD2 VIA Pro266T+8233
6AJA4T 694T + 686B
6AIVT 8601T + 8231
6AFV PLE133 + 8231

DFI
CA64-T 694T
CM33-T PLET
CS62-T 815EP
CS35-T 815E
CB60 BX
ITOX TX
CM33TL 8601T + 686B
CA64-TC 694T + 686B
CA64-TN 694T + 686B
CW35-S Intel 810
CA64-SC 694X + 686A
CM33-SC PLE133 + 686AI
CS65-SC Intel 815EP
CA63-SC 693A + 686B
CW35-E Intel 810E

ECS
M786 8601T/686B
P6VXM2 694T/686B
P6VXAT 694T/686B
P6VPA2 Pro266 + 8233
P6VXA 694X + 686A
P6VXM 694X + 686B
P6VAM 693A + 686B
P6VAA 693A + 686A

Elements
EL-994AN 694X + 596B
EL-630CF SIS630E

EPOX
EP-3PTA 815EP Bstepping
EP-3PTM 815EP Bstepping
EP-3VSA2 694T+686B
EP-3WTM PLE133+686B
EP-3WTM3 PLE133T+686B
EP-3WTM5 PLE133T+686B W/LAN
EP-3VWM2 8601A + 686B
EP-3VSA 694T + 686A
EP-3VSM 694T + 686A
EP-3VWB 8601A + 686A
EP-3VHA Pro266 + 8233
EP-3VCM 694X + 686A
EP-3VCA 694X + 686A
EP-CU133A 694X + 686A
EP-3VWM PLE133 + 686A
Epox EP-3VBM+ 693A + 686A
EP-693A 693A + 686A
EP-3SPA Intel 815EP
Epox EP-3S2A5L Intel 815
EP-3VCA2+ 694X + 686B
EP-3VWM2 PLE133 + 686B
EP-3VCA2 694X + 686A

FIC
FS15T Intel 815EP
FS35T Intel 815E
FS39T Intel 815EP
FW37T Intel 810E
FR33E VIA PLE133T/686B
FA15T 694T + 686B
FS35T Intel 815 B-step
FS39T Intel 815EP B-step
Forerunner Intel 810E
FR33E 8601T + 686A
FR33 PLE133 + 686A
FW 37 Intel 810
FW 37E Intel 810
FA13 693A + 596B
Verona PM133 + 686A

Freetech
P6F209 PL133 + 686A

Gigabyte
GA-6VTXE 694T/686B
GA-6VEML PLE133T/686B
GA-60XT 815EP Bstepping
GA-6VEML 8601T + 686A
GA-6VTX 694T + 686B
GA-6VTXE 694T + 686B
GA-6PMM PM133 + 686B
GA-6WMMC7-E1 Intel 810E
GA-6WMMC7 Intel 810
GA-6VXE7+ 693A + 596B
GA-6VXC7-4X-P 694X + 686B
GA-6VMM PLE133 + 686A
GA-6OXE Intel 815EP
GA-6VX7-4X 694X + 686A

GVC
MR201 PM133 + 686B
MR806 PLE133 + 686A

IWILL
DVD266u-R VIA Pro266T+8233
BD133u Intel 815EP
VX133u VIA 694X+686B
KK266 Plus-R VIA KT133A
VX133 694X + 686A
VD133 pro 694X + 686A

Jetway
601TCF 8601T + 686B
B860T 8601T + 686B
694TCS 694T + 686B
694TAS 694T + 686B
695AS 693A + 686A
994AS-L 694X + 596B
994AN-L 694X + 596B
630CF SIS630E

Luckystar
6VMPLE2 PLE 133+686A
6VA694 694X+686B
6VMPLET 8601T+8231
6VA694T 694T+686B

MSI
MS6337 Intel 815E-Bstep/ICH2
MS6309 VIA694T/686B
MS6368 VIA PLE133T/686B
MS-6178E Intel 810E
MS-6368 PLE133 + 686B
MS-6334 Intel 815
MS-6178 Intel 810
MS-6137 Intel 810
MS-6322-L PL133 + 686A
MS-6198 694X + 686A
MS-6309 694X + 686A
MS-6323 694X + 686A
MS-6188 Intel 810E
MS-6368 PLE133 + 686A
MS-6318 694X + 686A

PC Chips
M758LR SIS630E
M786MRT PLE133 + 686A
M781MRT PM133 + 686B

PC-Partner
898 PLE133 + 686B

PCpop
694T 694T + 686B

Procomp
BVD2A 694X + 596B

Proteam
U694BC Pro133T+686B
U601BS PLE133T+686B
U601BL PLE133T+686B

QDI
A6T 8601T + 686B
A10TM 694T + 686B
P6V694T / A10T 694T + 686B
P6V694X / A10E 694X + 686A
P6V694X / A10M 694X + 686A
P6V694X / A10F 694X + 686A

SHUTTLE
FV24 8601A + 686B
FV25 8606+686B
AV11 693A + 596B
ME64 Intel 810E
ME62 Intel 810
MV16 PL133 + 686B
MV19 PL133 + 686B
AV18 694X + 686A
AV18E 694X + 686B
AV14 694X + 596B
688V 693A + 596B
AV30 Pro266 + 8233
AV32 Pro266 + 8233

SOLTEK
Sl-65LIV-T PLE133T/686B
Sl-65KV2-T 694T/686B
SL-65ME-T 815E Bstepping
SL-65EP-T 815EP Bstepping
SL_65KV 694X + 686A
SL-65DV2 693A + 686B
SL-65FVB 693A + 596B
SL-65KIV 694X + 686A
SL-65KV2 694X + 686A
SL-65ME Intel 815
SL-65MIE Intel 815

SOYO
SY-7VBA133U 694T + 686B
SY-7VBA133U 694T + 686B
SY - TISU Intel 815EP B-step
7VBA133 693A + 686A
SY-7VEM PLE133 + 686A
SY-7VCA 694X + 686A
SY-7VCA2 694X + 686B

Tekram
S3PM-F PLE133 + 686A
S3Pro-AU 694X + 686A
S3Pro-M 693A + 686A
S3Pro-Mu 694X + 686A
S3Pro-AU 694X + 686A

TIGA
TI-693A+S 693A + 686A
TI-693A+100S 693 + 686A
TI-810+ ES Intel 810E
TI-810+ S Intel 810

Tyan
S1854 VIA694X/686B
S2505/2507 VIA694T/686B

Transcend
TS-ASP3 Intel 815EP
TS-AVE3/B 694T + 686B

Zida/Tomato
A694X 694X + 686A

I think this list would be very handy to put on the Vogonswiki, perhaps along with other lists like the one I put in another thread yesterday.

edit: The VIA C3 motherboard list has been added to Vogons Wiki.

According to this VIA C3/C7 Discussion it should work with the tusl2

Try another bios, confirm the board works fine with another cpu, try different ram, try different vga card. Or your cpu might be defective?

I have had a ASUS CUV/4X running OK with a C3 866MHz, the BIOS however does not report correctly, reports a Pentium II cpu! 🤣 I have a ASUS TUSL2 Intel 815E board I can test with it that is any help?

matze79 wrote:

I'm mistaken, its a 1.2Ghz Chip, yes i have one.
it has a C5P Core with 2x RNG and ACE, also supporting SMP.
i already tried a tualatin board from Asus (TUSL) and it doesnt go beyond POST, just memory count and end.

I had good results using the C3 Nehemiah Processor on the different Slot-1 i440BX boards that I have available. Just that the right slotket had to be put in between: The 'MSI MS-6905 Master' or 'UpgradeWare Slot-T'. In most cases these boards use the latest 'Tualatin patched' unofficial BIOS.
A similar thing was done with a VIA Apollo Pro Socket 370 board, where I used a 'Lin-Lin Adapter' to convert Socket 370 to 370-T, for running it with a Tualatin and later the C3 Nehemiah.

I'd like to know this also btw. I'd rather not pick the wrong board and have it crawl whenever I try to move the mouse cursor 😜

BSA Starfire wrote:

I have had a ASUS CUV/4X running OK with a C3 866MHz, the BIOS however does not report correctly, reports a Pentium II cpu! 🤣 I have a ASUS TUSL2 Intel 815E board I can test with it that is any help?

It needs to be a Tuv4x because that's the one that supports tualatin/nehemiah cores. I believe yours is an older core that works fine on a ''normal'' s370 board. I have a few tualatin boards but i have no c3 cpu's.

But i think his cpu is faulty or something else is going on as his board should run it perfectly. Even reviewers for that cpu used the Asus Tusl2-c.

meljor wrote:

BSA Starfire wrote:

I have had a ASUS CUV/4X running OK with a C3 866MHz, the BIOS however does not report correctly, reports a Pentium II cpu! 🤣 I have a ASUS TUSL2 Intel 815E board I can test with it that is any help?

It needs to be a Tuv4x because that's the one that supports tualatin/nehemiah cores. I believe yours is an older core that works fine on a ''normal'' s370 board. I have a few tualatin boards but i have no c3 cpu's.

But i think his cpu is faulty or something else is going on as his board should run it perfectly. Even reviewers for that cpu used the Asus Tusl2-c.

Maybe he needs to flash to a more recent BIOS?

I have used a number of VIA C3 CPUs for years (Samuel2, Ezra and Nehemiah) and I can confirm you that Nehemiah core can work on coppermine motherboards. I used them on a number of VIA 694X boards. Also on Apollo pro 266 (not T). Of course they also run on Tualatin boards. Some of them identified it as a PII. If I remember the TUV4X was sucho of those, but the SL-65KV2-T identified it correctly as a C3 CPU. All the range of GIgabyte S370 VIA boards from 693A to 694T work well. Also QDI (Advance-10 and Advance 10T) and MSI (6309) boards.

I also think that no nehemiah revision for 370 socket supported SMP. And BGA models didn't implement it in any design.

Combinations that I tested for sure:

693A -> Samuel2 / Ezra
694X -> Samuel2 / Ezra / Nehemiah
694T -> Nehemiah
Apolo pro 266 -> Nehemiah

flufetor wrote:

I have used a number of VIA C3 CPUs for years (Samuel2, Ezra and Nehemiah) and I can confirm you that Nehemiah core can work on […]
Show full quote

I have used a number of VIA C3 CPUs for years (Samuel2, Ezra and Nehemiah) and I can confirm you that Nehemiah core can work on coppermine motherboards. I used them on a number of VIA 694X boards. Also on Apollo pro 266 (not T). Of course they also run on Tualatin boards. Some of them identified it as a PII. If I remember the TUV4X was sucho of those, but the SL-65KV2-T identified it correctly as a C3 CPU. All the range of GIgabyte S370 VIA boards from 693A to 694T work well. Also QDI (Advance-10 and Advance 10T) and MSI (6309) boards.

I also think that no nehemiah revision for 370 socket supported SMP. And BGA models didn't implement it in any design.

Combinations that I tested for sure:

693A -> Samuel2 / Ezra
694X -> Samuel2 / Ezra / Nehemiah
694T -> Nehemiah
Apolo pro 266 -> Nehemiah

hello
i saw a report that while nehemiah managed to power on on an asus cusl2, its VCC is incorrectly detected as 2.0v, which would burn it up soon.

flufetor wrote:

Combinations that I tested for sure:

693A -> Samuel2 / Ezra

This sounds really discouraging for me as I have two spare Socket 370 boards, both Gigabyte GA-6VXE7+ boards with 693A chipsets (Rev. 1.0 and Rev 3.0, not sure what's the difference), on which I'm running Ezra and Ezra-T C3s and are being used as DOS test computers since I can alter their multipliers and enable/disable their cache on-the-fly, but I've been quite underwhelmed by their Windows performance even when overclocked (neither CPU can keep up with an AMD K6-III+ overclocked to 600MHz). I was hoping Nehemiah CPUs would work, but if every 693A board you've tried rejects Nehemiah C3s, I'm stuck, and unless there are boards using the chipsets you've tested compatible with at least one ISA slot and SBLink, the Nehemiah C3 I ordered will be completely useless.

Hello,

Ezra-T is also a Tualatin compatible core. If it works on the GA-6VXE7+, there are chances that the Nehemiah C3 will also work on it. Not sure about the voltage issue, but 1st generation Ezra is the one with the lowest operating voltage: 1.35V, and works on 693A boards. I remember reading that VRM spec for coppermines coluld go as low as 1.2V, so no problem, electrically. Another issue is VID management of the board. I have also GA-6VXE7+ units laying around somewhere (two of them). I'll try to test a Nehemiah on those when I have spare time and find them. Of course, I guess that the CPU is not going to be recognized properly because it should be too recent for the BIOS date.

Before finding that there were replies to my post, today, I was, funnily, doing some testing to rearrange CPUs in boards and making room for some new tualatins I got from ebay. Wanted to move a Nehemiah from a 694T board to a 1.5 GB capable 694X one (my remaining 694T boards are second tier and only support up to 1GB).

I think that the results will be useful for both posters:

CPU: 1.1GHZ Nehemiah core
MB 1: GA-6VXC7-4X-P : 694X/686B with one ISA slot, AMI BIOS F9 (03/12/2001), not latest: refuses to post with 5 short codes meaning CPU error. Boots OK with a 1 GHz Coppermine.
MB 2: GA-6VX7-4X: 694X/686A with no ISA slot 🙁, AMI BIOS F45 (latest): boots up recognizing an unknown VIA CPU ID:0694. BIOS Monitoring reports 1.439V VCORE.
MB 3: HP OEMized MSI MS-6318: 694X/686A Boots and enters memtest. It is totally confused about FSB speed, multiplier and CPU manufacturer.

Best Regards and luck

matze79 wrote:

Hi, […]
Show full quote

Hi,

i'm searching for a Mainboard for a 1,4Ghz Nehemiah C3,
anyone know one ?

i didnt came across one that will take it.
just Samuel II compatible boards 😒

Thanks

Matthias

You have a 1.4ghz C3?

Ace,

I have found some minutes ago one of my GA-6VXE7+ boards, this unit had VRM recaped with OSCON polymer caps When I savaged it had all those capacitors bulging ant still worked!!. Its a grat board: two ISA slots and 1.5 GB of SDRAM supported.

I have tested a 1 GHz Nehemiah on it. Adjusted manually FSB and multiplier just in case that it helps.

Good news!. It posts, reporting a VIA Cyrix III 1000MHz. That is the same string used for the C3 Samuel 2 (pre-Ezra) it had installed previously. CPU ID: 0693, PATCH ID: 0000.

GA-6VXE7+ rev 3.0. BIOS F6b 09/11/2000 693A/596B

No way to know about VCORE without a multimeter. This board has no integrated monitoring. At VRM capacitor output it measures 1.433V. Within spec. 😀.

FYI: There is no 1.0 rev of this board. It is a slightly different board (I have another two) without the E letter: GA-6VX7+ if I recall correctly. The main difference: the older model supports PPGA Mendocino core.

Ace wrote:

flufetor wrote:

Combinations that I tested for sure:

693A -> Samuel2 / Ezra

This sounds really discouraging for me as I have two spare Socket 370 boards, both Gigabyte GA-6VXE7+ boards with 693A chipsets (Rev. 1.0 and Rev 3.0, not sure what's the difference), on which I'm running Ezra and Ezra-T C3s and are being used as DOS test computers since I can alter their multipliers and enable/disable their cache on-the-fly, but I've been quite underwhelmed by their Windows performance even when overclocked (neither CPU can keep up with an AMD K6-III+ overclocked to 600MHz). I was hoping Nehemiah CPUs would work, but if every 693A board you've tried rejects Nehemiah C3s, I'm stuck, and unless there are boards using the chipsets you've tested compatible with at least one ISA slot and SBLink, the Nehemiah C3 I ordered will be completely useless.

flufetor wrote:

FYI: There is no 1.0 rev of this board. It is a slightly different board (I have another two) without the E letter: GA-6VX7+ if I recall correctly.

My very first PC from the early 2000s would like to prove the contrary:

It's also listed on Gigabyte's own website: http://www.gigabyte.com/products/product-page … spx?pid=2410#sp

I honestly have no idea what's different between this revision and Rev. 3.0. All I know is this motherboard is MUCH slower than my Soyo SY-6BA+ with Intel's 440BX chipset, at least with a 1GHz Pentium III, 512MB of RAM and a Voodoo 3 2000. I couldn't get the Nehemiah C3 working properly on the SY-6BA+, unfortunately, as the motherboard would lock the FSB to 66MHz as it would get stuck in Safe Mode. I've tried a few older 440BX boards and even a dual-slot 440LX board from (eww) PCChips, but the CPU wouldn't POST in any of these. I didn't test the Nehemiah C3 on Rev. 1.0 of the GA-6VXE7+ and I'm honestly not sure if the BIOS revision is the same between my two boards (the BIOS was never updated on my Rev. 1.0 board and I never checked what version is on my Rev. 3.0 board), but I will say, just going by what I've tried on the GA-6VXE7+ Rev. 3.0, this combination makes for a damn fine hybrid PC with a wider range of performance levels than the K6-III+. I'm going to do some more tests later this month, so look forward to that.

On another note, is there a Socket 370 or Slot 1 board that is compatible with the Nehemiah C3 that has three ISA slots, an AGP slot and an SBLink connector?