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AMD Radeon 6990 Club - Page 315

post #3141 of 4103
There is one thing I see in the detailed Vantage Score. CPU Score doesn't seem right. The CPU Test #1 & 2 seems too low for 4.8 GHz. Maybe stability issue there. I would try to squeeze the memory timings and to up the bandwidth see if it will improve CPU Score. LGA1155 is the strongest CPU IMC today, even a Gulftown is nowhere near in memory benchs without some serious extreme cooling.

Vantage is matured and not driver dependent. Try to stabilize the CPU OC and tighten memory timings and increase the bandwidth. I am sure the score will improve.

The graphics test looks fine.
Edited by Ken1649 - 8/20/11 at 9:53pm
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post #3142 of 4103
Well the CPU score doesn't surprise me, I have always hit around 25k with a 2500k at 4.8 to 5Ghz on Vantage. When I had the 2600k it would hit around 33k because of the extra threads. I checked some reviews and the GPU scores are similar to what I am seeing. Most of the 40k+ combined scores I am seeing are with 2600K's OC to 4.8+ or a 970/980x at 4.2-4.4Ghz, so i guess the scaling between dual and quad is not what I was expecting. I looked at a tri-CF versus quad-CF and the scores were close. It looks like the sweet spot for CF is tri-CF. I am still happy with my cards, but I will probably just drop back to one and then add a single HD6970 later on when I feel I need more.
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post #3143 of 4103
Didn't know that to be expected from 2500k. I don't see the reason 4 GPUs100% pegged in a small resolution, for instance, Vantage and 3DMark 11. The only game that I see 99.9% scaling for 5 GPUs (4 Rendering & 1 PhysX max 12%) is Metro 2033 in a small resolution 1920x1080 with average FPS 150. This game is really put the GPUs to the test. The rest of the games at that resolution averages 50% load with FPS 200. But when I span the resolution to 3 to 5 screens and create a Single Large Surface (Eyefinity), can really see the GPUs shine. Not all games are coded to utilize more than 2GPUs also.

Benchmark is a good tool to measure the performance of our set-up with various configurations. Maybe the drivers are not optimized for most Benchmarks with 4 GPUs, as a contribution of low percentage users with 4 GPUs.
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post #3144 of 4103
Yeah you are probably right, although I did test out Civ V in triple monitor fashion and it was way choppy, probably need to adjust some settings, but I found that a single HD6990 looked better than two. I will look at other games to see if I get the same results when I get a few minutes, hopefully tonight.
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post #3145 of 4103
For 4 GPUs, maybe you are the CPU wall for 2500k. Would be a good idea to look at 2600k to squeeze the performance out of the 4 GPUs.
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post #3146 of 4103
Maybe once MC drops the price to $200 I will, just do not need it right now. I really don't need 4 GPU's, but I like it. Who knows, give me a day or two and I will probably do that. Almost makes me wish I hadn't sold my Rampage Formula III and 980x off.
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post #3147 of 4103
Quote:
Originally Posted by utnorris View Post
Maybe once MC drops the price to $200 I will, just do not need it right now. I really don't need 4 GPU's, but I like it. Who knows, give me a day or two and I will probably do that. Almost makes me wish I hadn't sold my Rampage Formula III and 980x off.
The 2500k can go in a real hurry here http://www.overclock.net/wanted/1097...tel-2500k.html
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post #3148 of 4103
Yeah, unfortunately I won't get what I paid for my 2500k, but it's ok, the 2500k does what I need it to do. I will go back to a 2600k when I see a good deal on one. Patience will get me what I want, I got two HD6990's that way.
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post #3149 of 4103
Who cares about 3dmark synthetic benches? Run metro and crysis 2 benches in the bench forum thread rules and see how it goes.
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post #3150 of 4103
Well I do not have those two games, so I do not think I can bench those without the game installed. One thing that I do not understand is that the voltage does not go above 1.12v even if I adjust the power settings to +20% in Catalyst. AB does not allow voltage adjustment even if I check the "Allow voltage adjustments" box. What am I doing wrong?
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