29 replies to this topic

[Oderint dum Metuant]

T Hawk, on 11 November 2012 - 09:52 AM, said:

My HD7850 PCS+ is bored at 40% load, while my CPU (FX-4170) is probably falling asleep here and then with a max of 50% load.

The game is not making use of hardware and it is heavily optimized for Intel and Nvidia.

Hell I even switched from a HD4890 to a HD7850 PCS+ and it didn't change anything. Performance is absolutely the same. Theres no difference between the cards, I also tried multiple settings ranging from Very High all the way down to Low and nothing ever happens to my FPS.

GPU is less of a concern here for MWO it seems, the game appears to be coded to make heavy use of floating point math which Intel chips handle better than AMD chips.
If you took your GPU and placed it in a machine, with an I5/I7 chipset you'd find you would get better FPS.

How the game handles with Vishera AMD chips, is still up for debate.

[T Hawk]

DV McKenna, on 11 November 2012 - 10:26 AM, said:

GPU is less of a concern here for MWO it seems, the game appears to be coded to make heavy use of floating point math which Intel chips handle better than AMD chips.
If you took your GPU and placed it in a machine, with an I5/I7 chipset you'd find you would get better FPS.

How the game handles with Vishera AMD chips, is still up for debate.

I honestly can't understand such a huge drop in performance when comparing MWO to Crysis 2. As far as I know MWO is based on the Cryengine. Crysis 2 runs just fine on my machine.

I know Cryengine can be heavily modified but still...

Also...isn't "floating point math" something a GPU should do? I don't exactly know what this is but I've heard that somewhere.

Edited by T Hawk, 11 November 2012 - 12:53 PM.

[Oderint dum Metuant]

T Hawk, on 11 November 2012 - 12:44 PM, said:

I honestly can't understand such a huge drop in performance when comparing MWO to Crysis 2. As far as I know MWO is based on the Cryengine. Crysis 2 runs just fine on my machine.

I know Cryengine can be heavily modified but still...

Also...isn't "floating point math" something a GPU should do? I don't exactly know what this is but I've heard that somewhere.

It is quite simple, Crysis 2, was developed by people who knew the engine inside out, and is a finished article.
This is the first time PGI have used this engine, and the game is far from complete or optimized.

Floating point is done by a CPU.

[StealthR6]

I have an i5 2500k GTX570 that runs this game flawlessly.

But my e8400 @ 3.6Ghz 7850 @ 975Mhz runs like a snail. 3DMark benchmarks they are about 1-2fps apart. All games fly on the 7850 system. MWO they are like 30fps apart or more. Drops to 12fps at low detail @ 1680x1050 = major $#^&up.

I think this has something to do with AMD video drivers or the game just not be optimized at all for AMD cards. There is no way a 7850 should be having performance issues, even at low detail. And changing detail has almost no effect, there is something really wrong with MWO and that.

[Oderint dum Metuant]

StealthR6, on 11 November 2012 - 04:33 PM, said:

I have an i5 2500k GTX570 that runs this game flawlessly.

But my e8400 @ 3.6Ghz 7850 @ 975Mhz runs like a snail. 3DMark benchmarks they are about 1-2fps apart. All games fly on the 7850 system. MWO they are like 30fps apart or more. Drops to 12fps at low detail @ 1680x1050 = major $#^&up.

I think this has something to do with AMD video drivers or the game just not be optimized at all for AMD cards. There is no way a 7850 should be having performance issues, even at low detail. And changing detail has almost no effect, there is something really wrong with MWO and that.

Simple problem here, your looking at the problem in the wrong place. the E8400 is a dual core CPU, which do not like this game, as it's currently too much for them to handle comfortably in most cases.
The problem with your second system is not the 7850.

[Quinn Allard]

DV McKenna, on 05 November 2012 - 08:55 AM, said:

Sad but true, my 8120 gave worse performance than my 2500k 30/40 FPS compared to 50/60 now.
I have another guy in our unit who is now facing up to the same issue.

It would be interesting to see if this was just a Bulldozer issue tho.

Dont think so. I get high 50's, low 60's. On my brothers i5 machine with comparable specs he gets high 40's-low 50's. We built the machines around the same time. We get comparable FPS in most games, mine holds up to Prime95 alittle better and gets higher benchmark scores. His cost $200 more.

Mine:
AMD FX8150 4.9Ghz on Air
ASUS Sabertooth 990FX
16GB DDR3 Ram (mixmatched) 1600Mhz
Sapphire DiRT3 OCed 6950 2GB GDDR5 x 2
Win7 Ult. 64

Bros:
Intel i5 2500 3.9Ghz on Water
MSi Z68 (G43 I think)
12GB DDR3 Ram (3x4GB) 1600Mhz
GTX 560 2GB GDDR5 x 2
Win. 7 Ult. 64

[StealthR6]

DV McKenna, on 11 November 2012 - 11:39 PM, said:

Simple problem here, your looking at the problem in the wrong place. the E8400 is a dual core CPU, which do not like this game, as it's currently too much for them to handle comfortably in most cases.
The problem with your second system is not the 7850.

The cpu cores are running at 60% each... there have been reports that 7850 are only at 50% GPU usuage. There are some major issues with MWO. Friend has a 7950, a AMD quad core new system build 1 month ago, his fps drop to around 10fps at times as well. All other games run flawlessly for him. There is clearly something wrong with MWO, so far the devs haven't really acknowledged anything about poor AMD performance, but there is something funky going on. I wonder if has something to do with the Nvidia logo in the begining... just saying...

[Sen]

I'm at a loss. I know a lot of people with mobile cards [460m, MY 5870m] were stricken with low FPS after the last patch. I suggested removing the excess cards because that's what one DOES to troubleshoot hardware problems. if removing the cards does nothing, you've CONFIRMED it's not a hardware configuration problem.

The only time I've seen an issue like this on my desktop was last night, when my gfx driver randomly crashed while I was in mechbay. I had to completely restart the computer to recover.

I'm really starting to wonder if it could BE an AMD processor/code issue. . but i don't have a comparable machine to test it on [all I have is a 1090t Phenom II, which doesn't have AMD's version of hyperthreading] I can try installing on that machine and see how it handles it, but it may not be an "apples to apples" comparison. I'll give it a shot though, just to see what happens.

For the record:

Falcon-6
intel 3930k @ 4.7Ghz
Asus Rampage IV Extreme
1x 7950 [with a 2nd one sitting on the desk next to the case]
32Gig DDR3 @ a tight 1600



Update 1---------------------------------

Just out of curiosity, what version of windows are you using?


Update 2-----------------------------------

Phenom II X6 1090T @ 3.8Ghz
6970 @ 950/1125
Average FPS 35-40 on Ultra high.

Runs fine, so I'm gonna guess it's something with the new processor architecture, the client, and possibly the O/S [I know windows 7 was updated to make more efficient use of the . .w/e they call AMD's version of hyper threading, and it should already be baked into Win 8]

Best I can do for ya.

Edited by Sen, 13 November 2012 - 07:23 AM.

[kevwil]

I'm not getting proper scaling in CF. Here are my specs:

i5 2500k @ 4.4ghz
2x MSI TF3 7950 3GB in Crossfire
8GB of RAM
3 monitors in Eyefinity (22", 1680x1050 x3 = 5292x1050 with bezel correction)

When I turn all details to max, I get about 30-35fps average. It drops to 25 in the city map. If I set details to high or medium, it's about 35fps with 30 in the city map. I disabled CF and now get 45-50fps in high. So it seems like we have a negative impact on performance with CF; at least with my set-up. For now I guess I have to keep CF disabled. Hopefully we get DX11 + a fix for multi-GPU scaling (presuming just CF is the issue?).

If I turn all the details to the lowest possible settings, the shadows are completely borked. It's like everything is covered a big shadow and it disappears as I walk forward at a distance of about 50 metres in-game. Very strange. Once I set it to medium, all is well.

[Oderint dum Metuant]

That might be, because Xfire is not supported yet.