Why are my SPI times so CARP?

stock · 17 Jan 2013 at 08:30

Hello there,

I'm at 4.4 (1.33v) with 8GB @ 1866 9-10-9-27 (1.5v)

I tried running a 1M test and the time was at 20 seconds by loop 3 Lol

I'm assuming my overclock is either as stable as Britney Spears or about as efficient as a V8

Thoughts please?

8 Pack · 17 Jan 2013 at 09:53

Are you using the power saving features??? If so SPI may not be clocking up the CPU to full speed. Its only single threaded. Try changing power plan in wondows and run again. Also try CPU-Z to make sure your OC is being applied correctly.

stock · 17 Jan 2013 at 10:07

CPUz reports the full 4.4 (x44) All c states are disabled, I have speedstep and turbo enabled. Also, none of the benchmarking options are enabled in BIOS (M5F). My windows power plan was set to "balanced", but I've just set it to "performance"

I shall report back

stock · 17 Jan 2013 at 10:25

Just tried again. The initial value takes a smidge under 5 secs, the whole 1M run took a fraction over 1m 8 secs. I have nothing running in the background apart from my security software (other than essential windows services, natch)

Is it anything to do with vcore, could mine still be too low? I primed (blend) with the same settings at x45 last night and it fell over after about an hour, so I dialed it down to x44

8 Pack · 17 Jan 2013 at 11:59

Try assigning SP to one core and real time priority.

stock · 17 Jan 2013 at 14:52

Assigned it to core 0 and set priority to high as it refused to set real time

1m 20.269s

8 Pack · 18 Jan 2013 at 15:00

This is very very strange. If you try another benchmark are they equally as bad???

stock · 18 Jan 2013 at 23:38

I'm only getting about 60+ Gflops in IBT, each run takes around 245.xxx. My scores were much higher and took less time with an i7 920, and that was at a lower clock Lol

stock · 18 Jan 2013 at 23:46

Just tried another run

1m 25.386s

Lol

8 Pack · 19 Jan 2013 at 17:32

Is the CPU throttling?? Open CPU-Z when doing a run and check the frequencys. What board are you using???

stock · 19 Jan 2013 at 21:41

Yes it is. The multi does nothing but fluctuate between 16, 29, 44, 20, 17, 26, 44, 16, 31 etc etc for the duration of the run. Mobo is Maximus 5 Formula, CPU is a 3570k, RAM is 2x4GB Dominator GT 1866

eddyr · 20 Jan 2013 at 14:11

It shouldn't be, have you monitored cpu temps, vrm cooling(ought to be fine on that type of board). You have some troubleshooting to isolate the cause im afraid but it does sound like your oc is unstable, casuing throttling.

You mentioned it failed prime, does it still on a lower multi? What about on small fft?

8 Pack · 20 Jan 2013 at 14:34

You need to check CPU temps under load first for this one. Use Cpre Temp or Real; temp and run some load see the temps. You may have a bad cooler mount so this may need redoing also check the Vcore your at.

stock · 20 Jan 2013 at 15:40

Vcore is 1.32v fixed, LLC high. Temps hit mid 70's using prime blend