Bulldozer FX-8120 (4.9GHz), Modern Warfare 3 & Battlefield 3 Performance Update!!! - Page 4 - Overclock.net

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post #31 of 59 Old 11-27-2011, 04:04 PM
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Quote:
Originally Posted by ignoranceabound View Post

At 4.6 Ghz a BD should be able to power a single 460/6850 without any problems but so could a i3-2100 at stock.
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Originally Posted by black96ws6 View Post

I thought everyone was aware of this by now. Where have you been the last month? wink.gif
For one thing, never consider the 6 core Bulldozer chip. It's more like a tri-core PhenomII.
And regarding the 8120\8150, when using decently powerful cards in SLI\Crossfire, the performance is well below Intel chips.
Below is an article on this, read it to get the full picture, and I've also included 1 screenshot which sort of sums up the performance of BD with SLI\Crossfire cards:
http://www.hardocp.com/article/2011/11/03/amd_fx8150_multigpu_gameplay_performance_review/1
327

Turn APM off, You can see its on by the spikes in the graph because it will be going to 4.6ghz then dropping back to 2.8ghz over and over.

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post #32 of 59 Old 11-27-2011, 04:11 PM
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If you normalize to the tops of the spikes, it compares decently with a 2500k. Considering the lower clocks and IPC, thats only if throttling is actually occurring though.

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post #33 of 59 Old 11-27-2011, 04:11 PM - Thread Starter
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Quote:
Originally Posted by kevink82 View Post

Im having a hard time getting 60 fps in multiplayer on high setting in BF3 for 580 sli clock @ 900...... and that annoying random light just makes it impossible to aim and shoot ppl without they pulling the trigger first.....

I see that your running the eyefinity. Are you running SLI? Cause if you are you should not be having this problem. It says sli in you post but not in system specs. You should not be having any problems with a single card either. A single 580 is way better than both of mine together. You should not be having any problems.

I dont know what the light you are talking about is but maybe try turning down the overclock a little and see if that help. I dont know if youve already try it but if you are running sli then maybe try using one and see how it does.

I am not very familiar with evga but I hope I helped.
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post #34 of 59 Old 11-27-2011, 04:24 PM
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Quote:
Originally Posted by KarathKasun View Post

If you normalize to the tops of the spikes, it compares decently with a 2500k. Considering the lower clocks and IPC, thats only if throttling is actually occurring though.

It should be 5% or more higher then the top spikes since it will be spending its whole time at 4.6ghz instead of half a second then throttling down to 2.8ghz for 2 seconds. The higher you overclock the longer it stays at the low clock speeds to try and bring the power usage down.

I havnt seen a single review where the have actually disabled APM yet, You would think that they would at least do some research on the chip so they know how it preforms best.
I can bet they know all the best settings for a I5 2500k

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post #35 of 59 Old 11-27-2011, 04:35 PM
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Im just sad that I dont have a SLI 580 / XFire HD 6970 setup and FX-8150 to test these theories out for myself. And that the sites review sites havent brought updated reviews out, considering the masses of BIOS fixes since then.

Im limited to my GTX 465/470 and FX-4100 for my own testing, otherwise Id post updated results myself.

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post #36 of 59 Old 11-27-2011, 04:40 PM
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Even with just 1 card and APM enabled you get the same frame rate spiking with a 8120.
I was going to RMA my chip because it was doing it until I read about the AOD trick form majinsoftware, And then the option to disable it was added in a beta bios which also give a good performance increase over the AOD tick.

Dont know how bad APM works on the 4100, Im guessing it wont be so bad since you have half the cores and they are trying to be limited to 95w instead of 8 trying to be limited to 125w.

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post #37 of 59 Old 11-27-2011, 04:44 PM
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My ASRock board properly disables it, so its not a problem here. I get nothing that jittery when I game on mine.

If you want to see APM in action, use Core-Temp and set the refresh time to 100ms. This is what I first did to discover it was on. (older BIOS) You can see the frequency jumping around if you watch it.

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post #38 of 59 Old 11-27-2011, 05:20 PM
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Quote:
Originally Posted by mikezachlowe2004 View Post

There is no point in showing this graph when the two clock speeds dont match. Overclock them both to 5.0GHz and I bet that graph is in BD's favor. I guess you dont know the performance once BD breaks 4.9GHz. The BD performs around 20% better at 4.9GHz from 4.6GHz. We all know that BD performance is good once stable above 4.8GHz.
It would be wise to pay attention to the facts before you anounce some bs like that.
Hope I could help.
Thanks

clueless dude is clueless. even if you overclock BD to 5ghz it would still get it's ass kicked by a 2600k at 4.8ghz just saying
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post #39 of 59 Old 11-27-2011, 06:16 PM
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Quote:
Originally Posted by mikezachlowe2004 View Post

There is no point in showing this graph when the two clock speeds dont match. Overclock them both to 5.0GHz and I bet that graph is in BD's favor. I guess you dont know the performance once BD breaks 4.9GHz. The BD performs around 20% better at 4.9GHz from 4.6GHz. We all know that BD performance is good once stable above 4.8GHz.
It would be wise to pay attention to the facts before you anounce some bs like that.
Hope I could help.
Thanks

First things first, don't go accusing people of spouting BS by pointing out facts. If you don't like the details here, take it up with HardOCP, a known AMD friendly site.

Next, this review is comparing SLI'd GTX 580's. Trying to extrapolate performance using your much weaker 6790 crossfire cards is like comparing apples to oranges. They don't compare. The purpose of this article was to see how BD does when trying to drive serious GPU horsepower. And, according to the article, it doesn't perform as well as a Sandy Bridge CPU (in this case, a 2500k).

And, how many people can get BD to 5 ghz without a serious cooling option? For most, that's unrealistic.

Lastly, are you really complaining about a 200Mhz difference in clock speeds? Those were chosen because that's what most people can get the CPUs up to realistically without exotic cooling options.

I am just going to stop there because I don't want to say anything in anger wink.gif.

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post #40 of 59 Old 11-27-2011, 06:24 PM
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I got 5ghz with a antec 620, Id hardly call that exotic.

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