soupapes wrote on 2021-11-20, 14:02:
Limpem wrote on 2021-11-20, 12:39:I also did an additional test with a 200 Mhz pentium Overdrive.
The bios didn't give any error messages, but also didn't report […]
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I also did an additional test with a 200 Mhz pentium Overdrive.
The bios didn't give any error messages, but also didn't report the clockspeed.
Instead it just said Pentium ODP.
So if you want a 200Mhz error free boot process (and also extra cpu power + MMX instructions) you might consider this cpu if you can find it cheap.
Interesting. I guess I'll try to find a cheap one in ebay 😀
Thank you.
Sweet, but don't overspend!
Overdrive pentiums are usually quite expensive when I see them on ebay.
If you do want to buy them, it might be cheaper to upgrade the motherboard and use a regular pentium mmx cpu.
The boards I can recommend:
1st pick is the 93H4690 (which is what I currently use).
Although it is meant for a totally different system (IBM PC 330) it works perfectly in the aptiva (I did have to unscrew one of the mounts for a serial port for installation).
The advantages over your current board:
-intel 430HX chipset (still 64MB limit though)
-S3 trio 64V+ onboard graphics, which have one of the best dos compatibility
-Works fine with the 233MMX (shows as 100Mhz in bios, but no boot errors)
-Normally functioning pci ports, the Aptiva boards have some limitations with certain pci devices (TNT2, savage4, voodoo 5500 and other cards don't properly work on aptiva including the second pick, but they work fine on this board)
-Option to upgrade the riser board to a 60H9503 which gives 5x PCI and 3x ISA
The disadvantages to the second pick:
-No SD-Ram support
-No overclocking
-233Mhz cpu reported incorrectly in bios, but fully functional
-I never tried any official Aptiva install media, but it probably won't work on this board
-(very specific for my case) the ps2 mouse from my kvm switch isn't recognised by this board
2nd pick is the 93H77122
The advantages over your current board:
-Intel 430VX chipset
-Is an Aptiva mainboard and uses the same chipset as the 2176 A2 board, therefore my Aptiva install media worked with this board installed
-Ati 3D Rage II+ onboard graphics
-Works with SD-Ram instead of EDO Ram and EDO DIMM which grants a minor speed improvement with my testing
-Fully supports 233MMX Pentiums with correct clockspeeds in BIOS
-Overclocking to 75Mhz Bus (couldn't get it stable with certain hardware unfortunately)
Both those boards will require a voltage regulator which isn't needed for your current board.
In the pictures I included are both the Pentium and Pentium MMX boards.
The one on the left is for the Pentium MMX cpu's and the one on the right is for regular Pentiums.
Make sure the one suitable for your specific cpu is included if you order a motherboard as an upgrade (or order one seperately).
PS, I love the larger floppy drive! Other hardware seems nice as well 😁
430HX/P1 233MMX/64MB/S3VirgeDX,Voodoo1SLI(King Shaman)/AWE32
440BX/CelTualatin1400/512MB/Banshee, PowerVR PCX2/AWE64Gold
645DX/P4Northwood 3,5Ghz(Oc)/512MB/Voodoo5500/Vortex2
875P/P4EE 3,4Ghz/1GB/GeforceFX5950/Audigy2ZS
Z97/i3-4370/16GB/GeforceGTX960/X-Fi