q9550 overclock

flowone_uk · 27 Jul 2009 at 15:55

hey guys.

just put together my new rig heres the specs

2GB Corsair Dominator mem
Q9550 CPU
Biostar T I45
Samsung Spinpoint F1 HDD
XSPC Drive bay Resivoir
XSPC RS120 Radiator
XSPC V3 Delta water block (only the cpu is water cooled oh and usin feser collant)
HD 4870 1gb ddr5 gpu by sapphire

Just ran a prime95 test cpu hit 57 on core 0 and 55 on all other cores under a full stress test!

so 2 questions

1) what dya think lol

2) what do you think i should aim for on a cpu over clock

AMDX23800+ · 27 Jul 2009 at 16:03

What speed is the Q9550 standard?

I had the 2.87ghz Q9550 overclocked to 3.77ghz stable with the xigmatek cooler.
You could go for over 4ghz maybe?

Rab · 27 Jul 2009 at 16:27

got my Q9550 2 weeks back, right out of box put to 400fsb, didnt touch anything else, 3.4 was 4 hrs prime stable

now running it 3.7, happy at that, will try for more once get a better cooler than this old scythe

been really impressed with this cpu, on 1 test booted it 4ghz, but failed prime after 10 mins, so reckon will do it np with few adjustments, g/l with your new rig

flowone_uk · 27 Jul 2009 at 16:41

Thanks for that. Just out of interest what temps are they hitting under full load on prime?

AMDX23800+ · 27 Jul 2009 at 16:55

max 72 degrees at 3.77ghz/1.3625v

EdAllonby · 27 Jul 2009 at 17:08

Hi. Just to give my 2 cents. I've got a q9550 (stock 2.83Ghz). Overclocked it to 4GHz without much overclocking knowledge. Got it with a Titan Fenrir running at about 70 degrees under load. 1.4vcore, at 1.38vcore it just crashes games.

flowone_uk · 27 Jul 2009 at 17:08

Excellent thanks for that

got a good aiming ground now

DreXeL · 27 Jul 2009 at 17:10

My E0 Q9550 is rock solid at 3.8ghz, 1.32v. I'm running a basic CPU only water loop with a 120.1 rad, max temp ~65c on Prime, normal load when gaming etc never goes above 55c.

3.8 seems to be my chip's limit though, I wanted to get 4.0ghz out of it but I just can't get it stable

Can't complain though, 3.8 is great, plenty fast, rock-solid stable and nice and cool under water :cool:

setter · 27 Jul 2009 at 17:32

Running my EO stepping q9550 at 3.8ghz, 1.21875 vcore (1.200 idle) on air cooling, TRUE black with 2 x 1200 rpm fans, load temps are, 54-50-46-46 after 5 hours of small fft. Gonna have a crack at 4ghz with it.

Sayso · 27 Jul 2009 at 19:29

3.8 should be achievable on a C1 on an EO 4 shouldn't be to much of a struggle, matters on how good your cooling is. i got mine to boot at 4.2 for one benching run but wasn't stable

setter · 27 Jul 2009 at 19:33

Sayso said:
3.8 should be achievable on a C1 on an EO 4 shouldn't be to much of a struggle, matters on how good your cooling is. i got mine to boot at 4.2 for one benching run but wasn't stable

Which motherboard did you use for 4ghz + sayso? i think im ok on the cooling front as my temps are pretty decent at 3.8 so far, albeit a bit spread out between the cores.

Derek W · 27 Jul 2009 at 19:44

Sayso said:
3.8 should be achievable on a C1 on an EO 4 shouldn't be to much of a struggle, matters on how good your cooling is. i got mine to boot at 4.2 for one benching run but wasn't stable

I'm stuck on 3.4 c1 revision, 3.6 crashed after 5 mins prime95. haven't tried higher though.

Jay Bee · 27 Jul 2009 at 20:24

great chip

Running at 3.8 dead staple tops out at about 43-44c watching vidio's and films, had it at 4.6 staple but with the quite cooling system I use it does tend to warm up somewhat more so with the hotter weather.
Been at 3.8 for good time now and rock solid and is goodly fast for everything I do and not to hot.

setter · 27 Jul 2009 at 20:28

Very nice Jay Bee, been trying to get mine stable at 4ghz but ive run into a few issues.

EdAllonby · 27 Jul 2009 at 20:32

Do you think 1.4vcore is quite high for 4ghz. Plus I have a C1 revision. I didn't have much trouble withe getting it there either.. Weird.

OzZie · 27 Jul 2009 at 20:50

I'm at 1.350v for 3.8ghz. Sometimes the jump can be fairly large, so 1.4v is around the voltage i'd expect. My VID is 1.250v if it makes any difference.

EdAllonby · 27 Jul 2009 at 20:52

Ahh ok. I might try tweak around other things to get under 1.4volts

Sayso · 27 Jul 2009 at 20:58

setter said:
Which motherboard did you use for 4ghz + sayso? i think im ok on the cooling front as my temps are pretty decent at 3.8 so far, albeit a bit spread out between the cores.

P5Q-pro, 3.8 was my 24/7 clock..and the board/cpu was watercooled

setter · 27 Jul 2009 at 21:02

Thanks jaybee, ive heard with the p45 boards that the chipset voltages are the main players, coupled with GTL settings when going above 450fsb. My vid is 1.200,currently at 1.21875 in bios, 1.200 idle, 1.216 at load, pll of 1.54, vtt and nb at 1.26.

CaptainRAVE · 28 Jul 2009 at 09:21

EdAllonby said:
Hi. Just to give my 2 cents. I've got a q9550 (stock 2.83Ghz). Overclocked it to 4GHz without much overclocking knowledge. Got it with a Titan Fenrir running at about 70 degrees under load. 1.4vcore, at 1.38vcore it just crashes games.

You do realise at 1.4vcore that could seriously shorten its life right? 1.4v is the maximum you should go upto, but I wouldn't advise actually sitting on the limit.

Temps aren't too much of a problem. These chips are good upto about 70C, plus in real world usage it will rarely get to those temps anyway (unless you are always doing CPU intensive stuff).

Anyway, 4Ghz is quite easy to pull off with these chips. I have pulled mine back to 3.75Ghz now though to extend the chip life a little and to ensure the system is always rock solid stable.

Edit: also, mine is the C1 revision.

q9550 overclock

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