2700k stress test

Moonkey · 30 Jan 2012 at 01:03

Hi guys, i've just got my 2700k, and would like some advice on how to stress test it. Ive currently got it to 4.4 and CPU-Z says the vcore is 1.272.

I've downloaded prime95, and ran it for a bit, but what test should I do (blend test?) and how long approx should I run it for? Should I do the intel burn test to?

Also, what kinda max temps are safe for over the long term? Just keep it under 80?

Justintime · 30 Jan 2012 at 01:46

I do 150 runs with LINX max mem, and 24hrs prime at least, usually 48hrs currently. Never had an overclock fail, mostly 2600k between 4.5 and 4.8Ghz with the odd 5Ghz chip. 75-80c is ok with LINX if the ambient is about 25C, my builds usually top out at around 82c under 29-30C ambient (i crank heating up or summer test, never gone beyond 30 in the house in summer).

Wazz-1 · 30 Jan 2012 at 08:25

10 runs of IBT on max should do, if your temps are ok(I like to keep it under 70c) then run prime95 blend over night
I have my 2700k @ 4.5 GHz 1.304v, max temp 10 runs IBT-61c. Max temps under prime 14 hours -64c

Threepwood · 30 Jan 2012 at 09:09

10 runs is a waste of time considering you will then run prime overnight.

Plenty of times I've seem IBT fail in the late teens.

Moonkey · 30 Jan 2012 at 10:26

Ok, I will do 10 runs of IBT, and leave prime95 overnight. I don't think i could handle prime for 48hours, still got so many apps to install, and games to play

My temps are already mid 60's, so I probably can't take it much higher if I want to keep under 70. Might have a go at 4.6 tonight though. Quite tempted to get a better cooler at some stage.

Wazz-1 · 30 Jan 2012 at 11:06

shadesofgrey said:
10 runs is a waste of time considering you will then run prime overnight.

Plenty of times I've seem IBT fail in the late teens.

I use IBT to gauge temps before running prime over night, I don't want my processor running @ 75c/80c while im tucked up in bed!
Also I would very much doubt the op will stress his system more than IBT in every day use.
@ Moonkey 4.5/4.6 seems to be the sweet spot for the i7 2700k regarding clock speed, volts & temps. This is just my observation, remember not all processors clock the same.

danceMB · 30 Jan 2012 at 11:20

Mine came overclocked to 4.6, doubt I would be brave enough to go it alone and make it go higher, as I know some of these chips can go on you if you take it too far

Still, a 1.1ghz overclock is pretty damn impressive!

Moonkey · 30 Jan 2012 at 14:03

Thanks. Can't wait to get back home from work and play about with it again now. I am quite tempted to see how far I can take it, keeping the volts below 1.35 and temps < 80. I'm not very confident I have the settings right on the bios though, so I might post some pics up later and hopefully someone can let me know if it looks ok. I've got a Gigabyte Z68XP-UD4 mobo.

Geeman1979 · 30 Jan 2012 at 14:15

Moonkey said:
Thanks. Can't wait to get back home from work and play about with it again now. I am quite tempted to see how far I can take it, keeping the volts below 1.35 and temps < 80. I'm not very confident I have the settings right on the bios though, so I might post some pics up later and hopefully someone can let me know if it looks ok. I've got a Gigabyte Z68XP-UD4 mobo.

Im quite interested in how much vdroop you get with this motherboard as im playing around with the Z68X-UD4-B3 version with a 2600k and finding it quite high.

Moonkey · 30 Jan 2012 at 14:22

I haven't overclocked since my AMD Thunderbird, so im not even sure what vdroop is, lol. Is it the difference between the voltage set in bios and what is displayed in cpu-z?

Geeman1979 · 30 Jan 2012 at 14:29

Moonkey said:
I haven't overclocked since my AMD Thunderbird, so im not even sure what vdroop is, lol. Is it the difference between the voltage set in bios and what is displayed in cpu-z?

Yes under load. If you set your voltage at 1.350v as a reference and monitor what it drops down to underload with Cpu-z I can compare it with mine Cheers!

Moonkey · 30 Jan 2012 at 20:21

Ok, tried setting the vCore to 1.350V and started an IBT, and it BSOD :$

CPU-id had the vCore as 1.284v while it was going. Seems like a lot of vdroop?

zoomee · 30 Jan 2012 at 20:55

you probably need to adjust LLC values moonkey, to help offset the vdroop.

Moonkey · 30 Jan 2012 at 21:01

I tried vCore normal (1.34), with dynamic voltage of +0.060

Load was 1.344V while running IBT

IBT standard and high passed, but very high failed on the 7th run

Geeman1979 · 30 Jan 2012 at 23:07

Moonkey said:
Ok, tried setting the vCore to 1.350V and started an IBT, and it BSOD :$

CPU-id had the vCore as 1.284v while it was going. Seems like a lot of vdroop?

Try LLC at 4 5 6 and check which gets you closest to the voltage you've actually dialed in with minimum vdroop. I find level 5 works best for me.

Moonkey · 30 Jan 2012 at 23:32

It only lets me do the LLC if when I fix the vCore to a value, and then it wont lower the voltage on idle

My previous fail was at 4.6, so i'm not sure whether to up the vCore a little, or drop the clock to 4.5. I think i should probably drop the clock as my temps aren't great.

Geeman1979 · 30 Jan 2012 at 23:57

Ha! I just disable all the C/States as im not fussed about it going in to power saving mode.What cooler are you using? You should be safe with temps up to around 75 C under full load.You might have to bump your voltage a little to get 4.6 stable if your Cpu needs it.

Moonkey · 31 Jan 2012 at 11:43

i've got a Hyper 212 Evo, kinda wish i'd got a Noctua or something really. Temps were hitting the 75 mark (on the hottest core) under IBT @4.6, a bit lower with Prime.

I dropped the clock to 4.5, and passed IBT on Very High, and a 9 hour Prime. Temp on the hottest core was 68, average about 64 i think (during prime).

Speed · 31 Jan 2012 at 11:53

geeman1979 said:
Ha! I just disable all the C/States as im not fussed about it going in to power saving mode.What cooler are you using? You should be safe with temps up to around 75 C under full load.You might have to bump your voltage a little to get 4.6 stable if your Cpu needs it.

Best to just leave them enabled, it lowers idle temps and power consumption which is never a bad thing.

Moonkey said:
i've got a Hyper 212 Evo, kinda wish i'd got a Noctua or something really. Temps were hitting the 75 mark (on the hottest core) under IBT @4.6, a bit lower with Prime.

I dropped the clock to 4.5, and passed IBT on Very High, and a 9 hour Prime. Temp on the hottest core was 68, average about 64 i think (during prime).

75c is perfectly fine, this is an i7 afterall and not to mention on a rather low end cooler.

I generally use short runs (1 hour) of LinX All Memory and then Prime95 Blend. If it passes an hour of both it is more than likely stable, this is useful when tuning in the overclock and longer runs of both, usually overnight once I'm happy with the speed/voltage.

Moonkey · 31 Jan 2012 at 12:42

Speed, how have you overclocked urs? are you using the vCore set to 'Normal' and then using the dynamic voltage, or are you using a fixed vCore with LLC?

I do like the idea of it dropping the voltages etc. on idle, makes me feel a bit better, when i leave the PC on all evening.

Kinda regret the cooler choice now, but the temps arent too bad at 4.5. I may fit another fan on for push/pull, coz the ambient will be a lot higher come summertime.