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Bad winchester??
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Old 19th December 2004, 17:22   #1
Yama77
 
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Bad winchester??

Hi,

I'm trying to OC my new setup. (MSI K8N Neo2 Platinum +3200 winchester, Memory is corsair xms3200 2-2-2-5, PSU is Enermax 485 CoolerGiant)

I'm getting stuck at 2080 Prime stable, 2100 workable under windows. These are my test settings:

Multiplier ....... x9
HT mult ........ x3
HTT 231
Mem set for 133 (is at 148 when max OC)
V core 1.6V
High perf ......disable
Agr timing .....disable
Dyn OC disabled
C&Q disabled
Vdim 2.75V

Memory timings
DRAM speed 133
2T
CAS 2.5
Ras to Cas 4
Min Ras 6
Row precharge 4

I have been up to HT 260 with a x8 Multiplier setting.

Also cannot get this setup Prime stable over 2020 Mhz on stock Vcore....

I must be doing something seriously wrong.

(BTW the Vcore is measured with a DVM)

Any help or suggestions is greatly appreciated.

Yama
 
Old 19th December 2004, 17:33   #2
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Sure you're HTT multi is @ 3x , that is the thing that was holding me back.
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Old 19th December 2004, 19:42   #3
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Yep, it's on 3x

just doublechecked..
 
Old 21st December 2004, 20:51   #4
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many people report problems with prime95 + winny...


it doesn't mean your oc is unstable.

test with some other benchmark/stress test programs
 
Old 21st December 2004, 20:55   #5
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rather a bug in P95
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Old 22nd December 2004, 01:15   #6
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It seems no one is having much trouble OC'ing this combo.

I checked the core voltage, 1.41V readout on DVM, checked the HTT multiplier using the AMD CPU info tool (shows 800 when at x4), have memory at 133MHz (4/6) at relaxed timing.
CPU divider on x9. Disabled agressive timing and CnQ. Disabled all SATA ports. No overclock selected in CELL menu. Not using any PCI cards.

Memory is Corsair XMS XL 3200 2-2-2-5. Power supply is Enermax Coolergiant 485W with a total of 31A divided over 2 separate 12V rails.

I use clockgen to set and check clock, it confirms the CPU divider (CPU running at 1800) when cpu mup is set for 9.
I can get up to about 2100 (HT= 230) then system crash in to blue screen. If I set the CPU multiplier to x10, I hit the blue screen again at about 2100MHz. (HT=210)
Over 2020 I cannot get Prime 95 to complete more than 2 passes, except when I boost the CPU core to 1.6V. Then I get a little bit more, maybe 50MHz cpu clock.

The system runs ok at standard settings(CPUx10,HT x5, Mem 200MHZ), even with agressive timing enabled and the memory at 1T 2-2-2-5.

Another thing that is happening is that after a shutdown from the windows start menu, the system switches on the next time, and I sometimes get 3 messages telling me that windows has recovered from a serious error......send error report, etc.

I don't know where to look for the source of this/these problems.

Just did a check at HT x3, restart at HT=236 and 2130 MHz, So I don't think it's the HTT overloaded.

Even though I thought prime95 was fixed, I'm now just using blue screens as reference.
 
Old 23rd December 2004, 02:00   #7
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I read that many people have problems with winchesters memory controller.
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Old 30th December 2004, 23:26   #8
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No it's not the memory, nor the controller.

It dies at around 2100Mhz, and is only dependent on the Vcore.
Memory timings and speed and vdimm seem to be totally irrelevant. Tried it all, mem at 100 mhz, 166, 200. timing 2T 3-3-4-7. Everytime the same barrier.
Also when I drop the CPU multiplier to something like 8, and set the HTT to 3x, it still craps out at 2100 at 1.7V (real 1.69V) vCore.

Just a bad CPU, I think. Maybe AMD is screening better now.

Thanks all for the help.
 
Old 30th December 2004, 23:29   #9
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very weird, might have been an early week Winchester, because all the recent ones are hitting 2500-2700 on stock AMD cooling
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Old 30th December 2004, 23:49   #10
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i hope mine does


srry to hear that Yama77
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