Battle of the Slots 1 vs A
The SLOT 1
and SLOT A
systems have a special place in my heart. I think that this is the results of the fact, that back in the day, I never owned such a SLOT system.
When the SLOT
systems were heralded as the next BIG THING, I just upgraded my aging 5x86
to a Celeron 366A(scoketed)+440BX.
I was reading about the new SLOT CPU's
in the IT magazines and I was dreaming about PENTIUM II and VooDoo
but I couldn't afford one.......yep Good Old Days...just of a different kind!
By the time I left behind the Celeron 366A
, the world has moved on, and I bought a DURON 1.2GHz+Sis 735
which was soon replaced by Athlon XP 1900+ & Via KT333.Due to these facts
the SLOT systems remained as an undiscovered part of the map. " THERE BE DRAGONS! "
and THE WORLD IS FLAT!
Today, after 20+/- years
the SLOT systems are seen as something like an unnecessary move. Back then, they were seen as the light of a new beginning. Little did they know that their glory will be short lived. The socket outlived the SLOT.
The most vivid image
from those times is the BATTLE FOR 1000MHz.
I still remember it like it was yesterday.
After I worked with older systems the switch to SLOT systems came naturally. The fact that they had a short life made them even more enticing. Who needs a socket? Everybody has a socket! THE SLOT is the NEW socket! The first SLOT system
I owned was Pentium III - 450 MHz
upgraded to a Pentium III - 550MHz. This system was given to me a couple of years ago. The next SLOT system
I aquired was a SLOT A system with 4 CPU's K7 500, 550, 600 and 700MHz.
I was very happy when I bought the SLOT A system. I never saw one in the flesh. WHITE WHALES and stuff.
There she blows!!!!! I bought from the local OLX site.
The joy of owning a SLOT A system
was shadowed by the fact that the motherboard: PC CHIPS M800LMR 1.3A
was budget one and didnt permit the alteration of any settings for BUS, Memory Timings, Multiplier, etc...
To add assault to injury
some CPU's were recognized as different models. The only plus is that the motherboard and CPU's worked as intended.PIII-SLOT 1 & ATHLON-SLOT A info can be found on this page:viewtopic.php?f=25&t=48835&start=20
So, for almost a year, I searched for a suitable SLOT A motherboard.
The search wasnt frantic, but truth be told, the SLOT A motherboards arent so plentiful.
I also wanted to solve the mistery of the 500MHz
CPU with 900MHz
markings which was detected by the PC CHIPS M800LMR 1.3A
motherboard as a 700MHz CPU.
The 550MHz didnt boot on the PC CHIPS M800LMR 1.3A
motherboard and I wanted to see if it was still alive and kicking!This was the PLAN
Finding a SLOT A motherboard in my country was easier said than done
, because these motherboards are fewer than hens teeth!
After almost a year of searching
I found on the local OLX site the motherboard I present you bellow.
In the morning, afternoon and evening, I entered frequently
the local OLX site and searched the string "SLOT A". Usually this returned NO RESULTS
. The few times I got a result I found only another budget motherboard or a beat-up SLOT A CPU CRYING - HEEEEEEEEEEEELLLLLLLLLLLLLLLP!!!!!!!!!!!!!!!!
On the 27th of March 2017
I found an add on the local OLX
site which really got my blood pumping.
In the pictures was my WHITE WHALE, A F.....G AWESOME overclocking friendly SLOT A motherbord. THE PERFECT SLO(U)T.
With extras even, - A 700MHz CPU - F..KIN' A+++++++
The add was listed since 22th of March
so I rushed and sent a message in which I stated I WANT THE SLOT A SYSTEM - PRONTO!!!!!!
!&@!!)!)&@!)&#)!#!)#&!#) THE KIT WAS RESERVED BY SOMEBODY ELSE....DAMN! Back to:
SLOT A OLX =0 SLOT A OLX=0 SLOT A OLX=0....DIVIDE OVERFLOW....
On 11th April 2017
I typed on the OLX site, the now classic, string SLOT A and BAM! 2 results: The beat-up 750 SLOT A CPU crying for help and the SLOT A system I missed
.I sent a message instanlty.
The guy who reserved the kit didnt want to pay the full price (22EUR) and it was again available. I bought it instanlty!
Besides the SLOT A kit
I couldnt resist and I also bought a SLOT 1
kit. I really didnt have a 440BX motherboard. Good Old Chipset!The SUSPECTS:SLOT A
1. Asus K7M V1.04
Motherboard AMD 751 Northbridge & VIA 686A Southbridge, 3DIMM, 1xAGP x2, 5 PCI slots (with 1 shared ISA), PS2, USB, etc.
•Supports AMD Athlon™ processor de-signed for the AMD Athlon™ Processor Module (242-pin Slot A) and packagedin a plastic ball-grid array (PBGA).
•North Bridge System Chipset: AMD-751™ chipset with AGP/PCI/Memorycontroller supports a 200MHz Front Side Bus (FSB), supports up to 768MB ofPC-100 SDRAM DIMM, complies with AGP 2.0 specifications for 1X and 2XAGP modes and PCI 2.2. bus interface with support for 6 PCI masters.
•South Bridge System Chipset: VIA VT82C686A PCIset with PCI Super I/Ointegrated peripheral controller supports UltraDMA/66, which allows burst modedata transfer rates of up to 66.6MB/sec.
•PC100 Memory Support: Equipped with three DIMM sockets to support IntelPC100-compliant SDRAMs (16, 32, 64, 128, or 256MB) up to 768MB.
•Expansion Slot Options: Provides either four 32-bit PCI 2.2 and two 16-bit ISAexpansion slots or 5 PCI and 1 ISA. PCI supports up to 133MB/sec maximumthroughput. Each PCI slot can support a Bus Master PCI card, such as a SCSI card.
•AGP Slot: Supports an Accelerated Graphics Port card for high performancecomponent level interconnect targeted at 3D graphical display applications us-ing a 1X or 2X mode bus.
•USB: Supports up to 4 USB ports, two on the back panel and two midboard(optional), for more peripheral connectivity options
•UltraDMA/66 & UltraDMA/33: Comes with an onboard PCI Bus Master IDEcontroller with two connectors that support four IDE devices on two channels.Supports UltraDMA/66, UltraDMA/33, PIO Modes 3 & 4 and Bus Master IDEDMA Mode 2, and Enhanced IDE devices, such as DVD-ROM, CD-ROM, CD-R/RW, LS-120, and Tape Backup drives.
•Smart BIOS: 2Mb firmware gives a new easy-to-use interface that providesmore control and protection over the motherboard. Provides CPU/SDRAM fre-quency adjustments
2. AMD K7 SLOT A CPU 700MHz - AMD K7700MTR51B A
, K7700CURBBASLOT 1
1. Gigabyte 6BXC V1.7
Motherboard - Intel 440BX
· CPU - Pentium II processor 200 – 633 MHz. Suporta si Pentium III.
- 242 pins 66 / 100MHz slot1 on board.
· SPEED - 66/100 MHz system speed.
- 66 MHz AGP bus speed. (133MHz 2xmode)
- 33 MHz PCI-Bus speed.
- 8 MHz AT bus speed.
· DRAM MEMORY - 3 banks 168 pins DIMM module sockets on board.
- 8 ~ 768MB SDRAM.
- Supports DIB speed mode for L2 Cache.
· I/O BUS SLOTS - 4 33MHz Master / Slave PCI-BUS.
- 3 8MHz 16 bits ISA BUS.
- 1 66MHz / 133MHz AGP bus.
· IDE PORTS - 2 Ultra DMA/33 Bus Master IDE channels onboard.(Using IRQ14,15)
- Supports 2 USB ports.
- Supports PS/2 Mouse & PS/2 Keyboard.
2. Pentium II CPU - 350MHz
The components arrived without damage and the owner took the precaution to remove the retaining clips from the motherboard. THUMBS UP! Mister! gallery: https://postimg.org/gallery/fjh4dy8m/
The Asus K7M
has some huge capacitors.One is particulary BIG
They are good capacitors branded Rubycon
. Almost all the capacitors bear this brand. The only "problem" is a missing retaing clip form an SDRAM slot. NO PROBLEM!!!!
The Gigabyte 6BXC
also has good capacitors branded Sanyo. Almost all of them bear this brand. MADE IN TAIWAN
used to be as good as it gets!.
Both of the motherboards are complete
with jumpers and labels gallery: https://postimg.org/gallery/eai2g1y2/