k7s5a got a 2.083ghz 2600 ,that thinks its a1800

[MajorTom77]

Hi, Ive got a k7s5a mobo rev1.0 and Ive just stuck in a xp 2600 2.083ghz chip (which I think is a tbred) .Ive flashed it with the latest official rom 021029.rom (also tried the 020809.rom). The good news is that it runs the bad news is that it claims its a xp1800.
(Not sure what clock it thinks it is)
When I look in the bios in the cpu setup bit its at 133/133. I think it says the multiplier is 11.75 and the core is 8 or something like that. I only appear to be able to change the 100/100 to 133/133 part I dont appear to be able to change the multiplier. So how do I get it faster ?
Btw Ive lost the original maual that came with the mobo, ive looked at the downloadble pdf manual, but that diesnt seam much help.

So in short I dont want to overclock it I just want to know how to get my xp 2600 to be a xp 2600 rather than run as a xp1800.


Having said all this it runs battlefield vietnam waaaaay smoother than my old 1200 duron. When Im in the middle temple in ho chi min trail it now runs smooth like 30fps wheras before it would drop to 3-5 fps.

Btw ive only got 384 mg of 128 pin 133 mem not 21000 or anything. and running win98 and a geforce ti4200

 

[Peter]

That 2600+ is intended for 166 MHz front side bus, apparently. The multiplier being locked, you'll get only 4/5 its rated speed.

 

[MajorTom77]

Thanks for the reply, Ive checked out the clockwith sisoft sandra and it says its running at 1.53 ghz. (making it a xp1800).
You say it should be 4/5 of what its rated, but that would be rated as a xp 2100 and its not even that its only 1800. So is there no way of increasing the multiplier to more than 11.5 without getting out my soldering iron ? Are there any jumpers on the mother board I can change or anything Ive missed in the bios ?

Or is the long and the short of it that my xp 2600 is going to be a xp 1800, not even a xp 2100
until I get a new mobo ?

 

[Peter]

The actual _clock_ is 4/5 of what it should be. The displayed rating is even further off because the K7S5A's BIOS doesn't know the ratings of those CPUs it doesn't support properly anyhow.

The mainboard can't do anything about the CPU's multiplier, as long as you don't hack the CPU itself to allow it. Even then still, this particular mainboard model doesn't have any of the extra circuitry required to control the multiplier.

 

[o1die]

You can load the cheepoman bios upgrade and try for 166/133. I couldn't get it to work properly past 150/150.

 

[MajorTom77]

Thanks for all the advice , I had a quick look at the cheepoman bios and basically it means pushing the fsb speed beyond the standard limits.
I am only really interested in doing stuff the boring safe way.

Its just a bit anyoying that for the talk on various boards about sticking a xp 2600 in a k7s5a , I appear to be the first person (mug) to have actually tried it.
Anyway once again thanks for the advice, Ill probably just buy a new cheepy motherboard to go with it, just shame I didnt know to start with or Id have bought oneof the memory processor mobo bundles.

 

[tcsenter]

Its just a bit anyoying that for the talk on various boards about sticking a xp 2600 in a k7s5a , I appear to be the first person (mug) to have actually tried it.

XP2600+ in 266FSB (133MHz) model works just fine on the K7S5A.

XP2600+ in 333FSB (166MHz) model does not.

 

[MajorTom77]

Sorry in what way works fine , because it runs at 1.5ghz i.e. a xp1800, but its actually a xp 2600 (tbred I think) . Do u mean if u solder some connections different or oc the bios to run at 166/133 and somehow by overclocking type means get it to run at 26000 thats fine
or do u mean a 2600 chip that runs as a 1800 chip is fine ?

 

[tcsenter]

Your complaint is that your XP2600+ will not run as an XP2600+, right?

It would had you purchased a 266FSB model instead of a 333FSB model.

You do realize there are two different XP2600+ models, yes?

 

[Peter]

Actually, there are six. Desktop Thoroughbred for 133 and 166 MHz, plus a very recently added Barton at 166 MHz. Then there's mobile Thoroughbred and Barton 2600+ at 133 MHz, and finally an MP Barton for 133 MHz bus.

For the K7S5A, only the first of the above flavors will run at its intended speed.

 

[tcsenter]

Ok, I will amend my question...

You do realize the XP2600+ comes in two different FSB offerings, yes?

 

[MajorTom77]

It is a 333 FSB 2600 2.083ghz model (tbred I think) chip , but Ive got to admit I didnt think that it would be any worse in any way than a 266 one.
So are u saying then that a 266 FSB tbred xp 2600 will run and work as a xp 2600 in a 133/133 k7s5a mobo but the the 333 FSB 2600 tbred xp chip will only run as a XP1800 with the same mobo.

 

[o1die]

You might want to consider a newegg refurbished board with the nforce2 chipset. They start at about $31 shipped.

 

[tcsenter]

Originally posted by: MajorTom77
It is a 333 FSB 2600 2.083ghz model (tbred I think) chip , but Ive got to admit I didnt think that it would be any worse in any way than a 266 one. So are u saying then that a 266 FSB tbred xp 2600 will run and work as a xp 2600 in a 133/133 k7s5a mobo but the the 333 FSB 2600 tbred xp chip will only run as a XP1800 with the same mobo.

Umm...where did I put my copy of "CPU Bus Frequencies and Multipliers for Noobs"?

But yeah, 266FSB (133MHz DDR) processors are the max 'officially' supported on the K7S5A. A 333FSB processor uses a lower multiplier and higher base frequency than a 266FSB processor to arrive at the same performance rating (in this case 2600+). The multiplier is determined by the CPU.

A. 100MHz FSB x 10 = 1000MHz
B. 133MHz FSB x 7.5 = 997.5MHz
C. 166MHz FSB x 6 = 996MHz

All of the above examples yield approx. the same MHz and would likely be labeled as 1GHz processors (rounding a little is the norm in CPU speed ratings). If you put processor C in a motherboard that only supports versions A and B (provided it functions at all), your going to get version C's multiplier because it is fixed in the CPU, but not version C's FSB because it isn't supported by the motherboard. Instead, you're probably going to get version B's FSB, or worse, version A's FSB. When combined, it might look like this:

133MHz FSB x 6 = 798Mhz (rounded to 800MHz). So you have CPU that runs at 800MHz instead of the 1GHz it is intended for.

Or worse, 100MHz FSB x 6 = 600MHz.

 

[MajorTom77]

Well I think u just wrote the "CPU Bus Frequencies and Multipliers for Noobs" cheeers. Very helpfull.
I know Im going to sound dumb but I hadnt quite twigged that fsb speed was so directly connected to the processor speed before. (Yes I knew it stood for front side bus just wasnt to sure what the hell a front side bus was).
Still think its a shame the ecs website doesnt give a bit more of a guide to what to look out for ,I had to track down on the web to work out that it was talking about a palameno and a thoroughbred with the 0.13 micron process stuff.

The irony is that I was goinfg to order a 266 fsb model from novatech, but my local pc store had this in. So I asked if it was a thoroughbred but he didnt know so I thought I would take a gamble. I got lucky in as much as I think it is a tbred, i.e. it says 2.083ghz on it but I didnt know they even made a 333 fsb version of it and thought what the hell.

Or does the 333 thing mean it must be a barton after all ?

Either way it still runs battlefield vietnam and desert combat smoothly which is way way faster than my 1200 duron used to. (prob a cache size thing) .

 

[Peter]

See above - you might have a Barton or a Thoroughbred there.

 

[robcy]

While the K7S5A is not officially rated to run 166fsb processors, it will...Kinda. You will never get that board to post or boot at 166/166 or 166/133 from bios, but there is a solution. Download Speedfan Set it up to load automatically with windows, select 166fsb/133mem, and do this on a latests stock bios (not honeyX or Cheepoman), and voila. It will post/load at 133/133, and when windows loads it will adjust your FSB to 166 allowing you CPU to run at its rated speed of 2083mhz, it works for Barton CPU's too. The only thing of note is that the Chipset might get hot, if so remove the sink dab a like articsilver place sink back on chipset, and thats it. You can also get some DDR2700 and do 166/166 with speedfan.