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Why won't my TCCD do 1T at any decent fsb?

C

charloscarlies

Golden Member
Like the title says.

This stick does 270+ at 2.5-3-3 at 2T, but it won't even do 230 at the same timings w/ 1T command rate. What's the deal? I've tried 2.6-2.9 volts makes no difference. It does do 2-2-2 at 200 w/ 2.7 volts memtest stable so I don't think it's just a bad stick. This is the second one I've tried that won't do high fsb w/ 1T.

I'm starting to wonder if the memory is even the cause. The chip is a CG and the mobo is a VNF3-250 w/ 9/21 bios.

Any ideas?
 
Are you using 2 double sided sticks? If so, 230 is probably the upper limit on that board/processor w/ a 1T command rate.
 
Originally posted by: Computer MAn
I think he meant does your stick have modules on both sides.
Click to expand...

he meant did he have 2 sticks with modules on both sides
it is most likely a double sided stick. i know my friend's 754 board wont do any decent clocks/timings with 512MB sticks, so i would guess it is not the ram.
 
Originally posted by: whatever
Originally posted by: Computer MAn
I think he meant does your stick have modules on both sides.
Click to expand...

he meant did he have 2 sticks with modules on both sides
it is most likely a double sided stick. i know my friend's 754 board wont do any decent clocks/timings with 512MB sticks, so i would guess it is not the ram.
Click to expand...

That's what I'm thinking. And yes it is a double-sided stick, but only one.
 
some of the nforce3 boards... well nforce3 150 boards didn't have pci lock so SATA drives really limited the overclock...

i'm not too familiar with the vnf3-250 by chaintech right? how many sata ports does it have and what controls them?

i'd say it might be a SATA issue as well... you have a PATA drive lying around or a pci SATA card?
 
Originally posted by: Shimmishim
some of the nforce3 boards... well nforce3 150 boards didn't have pci lock so SATA drives really limited the overclock...

i'm not too familiar with the vnf3-250 by chaintech right? how many sata ports does it have and what controls them?

i'd say it might be a SATA issue as well... you have a PATA drive lying around or a pci SATA card?
Click to expand...

Yeah I do. Might have to give it a try. I'm gonna be pissed if I can't use my Raptor. :|
 
I *think* the VNF has 4 SATA ports, though I might be wrong. If so, switch the drive(s) to the other 2. Otherwise you might be SOL with SATA drives.
 
Originally posted by: acivick
I *think* the VNF has 4 SATA ports, though I might be wrong. If so, switch the drive(s) to the other 2. Otherwise you might be SOL with SATA drives.
Click to expand...

Thanks I'll give that a try. I don't think the SATA is the problem though because it does 250 at 2T. The only problem I'm having is when trying to run it at 1T.
 
charloscarlies,
I have the same cpu/mb combo as you do, and I can't do 1t either. By the way, I don't have sata drives either. Out of curiousity, how much of a performance hit is it?
 
From what I've read, you would need to increase the FSB by ~15MHz when on 2T to equal the performance benefit of setting the memory to 1T. Of course YMMV, so the best way to find out is to do some benchmarking.
 
Originally posted by: Rhoel
charloscarlies,
I have the same cpu/mb combo as you do, and I can't do 1t either. By the way, I don't have sata drives either. Out of curiousity, how much of a performance hit is it?
Click to expand...

I ran SuperPI at 250 2.5-3-3-6 @ 2T and it makes a HUGE difference. I think I went from 37/38 seconds to 43/44.

1T definitely makes a huge difference with the A64's.

I wonder if this board just doesn't like 1T at high fsb?
 
it's possible... have you tried a beta bios or anything?

visit xtremesystems.org and see what you can find on this board!
 
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