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Old 04-03-08   #1 (permalink)
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Default 8800GTS (G92) OCing (840/2248/2098), experimentation/thoughts

-EDIT- 5/16 Broke 17.5K

Before: 3.42ghz E4300 8800GTS G92 840/2206/2098 14,228

After: 3.95ghz Q6700 8800GTS G92 840/2248/2098 + 175.16 WHQL 17,574

SM2 6644 -> 7432 +707(11.8%)
SM3 6803 -> 6963 +160(2.35%)
CPU 3044 -> 6227 +3183(105%)

8800GTS (G92) OCing (840/2248/2098), experimentation/thoughts-3.95ghzgpu840mhz3dm06.jpg

It seems my GTS's memory might squeeze out even a few more mhz before all is said and done...

-Update- 14K
haz been defeated! Scroll down for SS. Sorry no compare links as this is my work/play computer which stays offline -Update-

-EDIT- 4/15
New OCs + score!

New OCs and Score:

CPU: 3.42 ghz
GFX: 840 mhz core / 1103 mhz mem / 2098 mhz shader

Score: 14228



-Thoughts-

I was never a big fan of the futuremark bench applications, but that had more to do with my inferior GFX cards from eons gone by... Undoubtedly others already know this, but increased memory clock significantly boosts HDR/SM3.0 scores. Prior to this mornings bench session I had kept my memory clocks between 1000-1013mhz. Well, after I found that my core/shader clocks limits were near identical to their linked speed (840mhz core / 2100mhz shader) I decided to tweak my memory -> 1103mhz and I may yet have a little more headroom.

While many believe memory clock isn't as important it's still worthwhile to tweak especially once you have determined the upper limits of the core/shader. I had been planning to upgrade my monitor and CPU next, now I think I'll upgrade my CPU and go WC instead. Perhaps H20 + v-mod will make 900mhz+ core / 2250mhz + mem / 2250mhz + shader achievable? 9800GTX... What's that?

What do you guys think, is it possible to get 14K or more with an e4300 that walls out @ 380FSB and an 8800gts(G92)? Screens or compare links welcome...

-EDIT 4/11- forgot to post my best run(done for today)

Ok I've only managed to get 370FSB stable(3333mhz) and have only fooled around with the GFX card a little:

CPU : 3.33 Ghz
GFX : 782 mhz core / 1013 mhz mem / 1953 mhz shader

Score : 13593

8800GTS (G92) OCing (840/2248/2098), experimentation/thoughts-3.33ghzgpu782mhz.jpg

-EDIT 4/14- New OCs + score

CPU: 3.39 Ghz
GFX: 820mhz core / 1005mhz mem / 2048 mhz shader

Score : 13887

8800GTS (G92) OCing (840/2248/2098), experimentation/thoughts-3.39ghzgpu820mhz.jpg

-Thoughts-

I was on the edge of benching stability with anything beyond 810mhz core a week ago. Now I'm bench/gaming stable at 820mhz core and I will try for even more tomorrow...

So what changed? TEMPS!

~50-55°C seems to be the maximum load temp range for stability when OC'd. I tested this by leaving my fan speed @ 30% w/ 820 mhz core and my driver crashed when I broke 60°C while runnning 3D06. Stock clocks are stable even when the card is blazing, but as core/shader frequencies increase stability becomes directly proportional to temps.

I will test this theory further tomorrow morning when the low should be in the upper 30s°F and I'll crank the fan speed to 90-100%.

We'll see, I might hit 14k yet!

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Last edited by MasterKromm : 05-16-08 at 09:06 PM
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Old 04-03-08   #2 (permalink)
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Here's me JUST breaking 14K ...

http://service.futuremark.com/compare?3dm06=5670344

This is with:
8800gts 512 @810/1944/2290mem
e6550@3.325 (475x7)

So my guess would be that no, you won't be able to do it with that cpu unless you can get it to OC higher, get over that FSB wall somehow ... The difference in our GPU clocks will only account for a very small part of the difference between our scores in this test.
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Quote:
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really i don't think overclocking will be worth the risk for me i rather play it safe and upgrade my graphics card every year and cpu instead of overclocking.
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Indeed, because half of OCN are half-whits like you, and this thread just prooves it.

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Old 04-03-08   #3 (permalink)
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maybe but it will depend on how well your card overclocks.
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Old 04-03-08   #4 (permalink)
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Quote:
Originally Posted by brettjv View Post
Here's me JUST breaking 14K ...

http://service.futuremark.com/compare?3dm06=5670344

This is with:
8800gts 512 @810/1944/2290mem
e6550@3.325 (475x7)

So my guess would be that no, you won't be able to do it with that cpu unless you can get it to OC higher, get over that FSB wall somehow ... The difference in our GPU clocks will only account for a very small part of the difference between our scores in this test.
Actually my CPU score is a tad higher than yours... That memory clock is intense, I wonder if that extra bandwidth helped? I'll keep the CPU @ 370FSB x9 for now, but I'll see how much more I can OC the GFX card then go from there.

Should I attempt OCing the Shader clock independent from the core? Supposing I landed the less desirable Qimonda memory, what's the average maximum they OC?

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Old 04-03-08   #5 (permalink)
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And here's me getting almost the exact same score as you with my e6550 at 3096Mhz:

http://www.madonion.com/compare?3dm06=5561272

And you can see by my sig what I get with my e8400 @ 4005 MHz

Scores on this test are strongly CPU bound, and it's NOT just because of the CPU score differences. The SM2.0 scores rise according to the cpu clocks as well. The SM3.0 do too, but much less so.
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Quote:
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really i don't think overclocking will be worth the risk for me i rather play it safe and upgrade my graphics card every year and cpu instead of overclocking.
Quote:
Originally Posted by Artas1984 View Post
Indeed, because half of OCN are half-whits like you, and this thread just prooves it.

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Old 04-03-08   #6 (permalink)
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Oh, I see, you're at 3.33 yourself, thought it was at 3.1. Okay, well, then some other tips: Graphics driver on High Performance, Negative LOD bias on Clamp. Yes un-hitch your shaders so that you can figure out the max OC on core/shaders separately and run those. Crank your gpu fan up to at least 80%. Most people with the qimonda get between 2000 and 2100. I would not think the diff between 2000 and 2300 on the memory would make a 500 point difference (3.5%) in *that* test, but it's possible I suppose. More likely, its the difference in the core speeds, given that (810-782)/782*100 equals ... whaddya know: exactly 3.5%!
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Quote:
Originally Posted by bcooper56 View Post
really i don't think overclocking will be worth the risk for me i rather play it safe and upgrade my graphics card every year and cpu instead of overclocking.
Quote:
Originally Posted by Artas1984 View Post
Indeed, because half of OCN are half-whits like you, and this thread just prooves it.

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Old 04-03-08   #7 (permalink)
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Hey man i got the same cpu..Could ya help me with overclockin it a tad more to 3Ghz?
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Old 04-03-08   #8 (permalink)
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What drivers you running? If you get everything overclocked to the max and are just hair away from the 14K mark, sometimes changing to better drivers can push it over the edge. I was stuck at 7996 +- 2 and just couldn't get it over 8,000. Changing to better drivers (174.74b) got me an extra 80 points, and it wasn't just once. I did multiple runs and got the same results. Might want to give that a try, especially if you're using outdated drivers. And I agree, you should try adjusting your core and shader separately. If you have to tone down your memory clock so you can get a higher core clock stable, do it. Higher core and shader clocks are better than a higher memory clock, they make the most difference.
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Old 04-14-08   #9 (permalink)
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Ok I've managed to add another ~300 pts to my previous best .

New OCs + score

CPU: 3.39 Ghz
GFX: 820mhz core / 1005mhz mem / 2048 mhz shader

Score : 13887



-Thoughts-

I was on the edge of benching stability with anything beyond 810mhz core a week ago. Now I'm bench/gaming stable at 820mhz core and I will try for even more tomorrow...

So what changed? TEMPS!

~50-55°C seems to be the maximum load temp range for stability when OC'd. I tested this by leaving my fan speed @ 30% w/ 820 mhz core and my driver crashed when I broke 60°C while runnning 3D06. Stock clocks are stable even when the card is blazing, but as core/shader frequencies increase stability becomes directly proportional to temps.

I will test this theory further tomorrow morning when the low should be in the upper 30s°F and I'll crank the fan speed to 90-100%.

We'll see, I might hit 14k yet!

System: uATX monster WIP
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Old 04-14-08   #10 (permalink)
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Well, you changed your first post so much that our conversation below doesn't make much sense, but oh well.

Now you see why I stipulate my fan speed in my signature line along with my overclock, and why so many people around here mention that you need to force your fan speed up to be able to reach your true max overclock on these 8800GTS512 cards

That's an awesome OC by the way. You should be stoked.
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Quote:
Originally Posted by bcooper56 View Post
really i don't think overclocking will be worth the risk for me i rather play it safe and upgrade my graphics card every year and cpu instead of overclocking.
Quote:
Originally Posted by Artas1984 View Post
Indeed, because half of OCN are half-whits like you, and this thread just prooves it.

System: it's a big machine
CPU
i920 D0 @ 4.0GHz (200x20, 1.25V +ht -turbo)
Motherboard
gigabyte ex58-ud4p
Memory
3 x 2GB corsair xms3 PC12800 (9-9-9-24-1T@1600MHz)
Graphics Card
gtx295 co-op@712/1512/2484 + 8800gts 512mb physx
Hard Drive
raptor X,2x320gb caviar(raid 0), 1tb spinpoint
Sound Card
x-fi titanium pci-ex
Power Supply
cm realpower 850W (12V@64A)
Case
cm storm sniper
CPU cooling
cm V8 (33 idle, 55 load)
GPU cooling
stock
OS
xp sp2 / se7en 64 rc
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asus vw266h 25.5" (1920x1200)
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