HD 4850 LOW Fps Fallout 3

1365 Views 9 Replies 4 Participants Last post by ibanezbass, Nov 30, 2009

ibanezbass

Discussion Starter · Nov 29, 2009

Hi I'm having some problems playing Fallout 3 on my rig... it worked fine on my old visiontek 4670 and pentium DC e5200 on ultra high/high settings at 1080p. now on my new rig (specs below) i cant get the framerate to stay over 30fps. I have the card overclocked to 700/1090, and i'm running ultra high no AA/AF @ 1680x10xx whatever the exact resolution is. I have the newest drivers from ATI... any ideas?

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Dopamin3

· #2 · Nov 29, 2009

Huuuuuge CPU bottleneck. I'm talking XBAWKS HUEG. Plus the Phenom 9x00 series had a TLB error which can cause lockups, and when the patch is put in place to fix it, it reduces performance greatly. The 9x50 series fixed the problem. Phenom was just an embarrassment for AMD

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meticadpa

· #3 · Nov 29, 2009

Stuff like this is always driver issues. Always. You're probably going to get someone telling you that your CPU is bottlenecking, but they're wrong.

Reinstall your drivers.

Do it like this:

Download Driver Sweeper
Boot into Safe Mode
Remove drivers
Reboot into Windows, install the newest drivers
Boot into Windows again
Run the game

That should work. If that doesn't, then there's another issue that we need to address, but 99% of the time, it's a driver issue.

Edit: Dopamin: I've never heard of that. Hmm, I'll look into it.

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Dopamin3

· #4 · Nov 29, 2009

Quote:

Originally Posted by meticadpa

Edit: Dopamin: I've never heard of that. Hmm, I'll look into it.

I can guarantee it's a CPU bottleneck. 2.3ghz on an already bad architecture isn't going to cut it for any game out there. And it probably can't be overclocked that high so I don't think that computer will be enjoying too many games. The e5200 is much better suited for gaming and overclocks much higher.

Here's some info on the TLB erratum, but I'm sure you can find out more by searching. Phenom is something AMD, and myself, would like to pretend never happened.

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ibanezbass

Discussion Starter · #5 · Nov 29, 2009

I've tried to OC it. I'm stable @ 2.4 stock voltage, but at 2.5 I have to start increasing the voltage exponentially. @ 2.6 I have to add 300mv to get boot. How fast do I need to be running to level the field. And is it worth it to try to get there by jumping the voltage mass amounts

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Dopamin3

· #6 · Nov 29, 2009

Quote:

Originally Posted by ibanezbass

The first gen Phenoms are terrible for overclocking. To avoid a bottleneck you would probably need to get it to around 2.8ghz-3.0ghz which sadly isn't going to happen

The only advice I could give to you is to go back to your e5200 or buy a Phenom II.

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ibanezbass

Discussion Starter · #7 · Nov 29, 2009

Going back to the e5200 isn't an optionbut it makes sense that it would do better sense I had it clock to 3.3. I guess I'll just have to save up for a phenom II

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ibanezbass

Discussion Starter · #8 · Nov 30, 2009

I FIXED IT!! For anyone who has the same problem, disabling the TLB patch fixed all my framerates.. Fallout 3 went from 25 to 60, Gears of war went from 16 to 60, and crysis went from 25 on medium to ~32 on high.

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ArmenianLegend

· #9 · Nov 30, 2009

what is a tlb patch?

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ibanezbass

Discussion Starter · #10 · Nov 30, 2009

I'm not exactly 100% sure myself, but to my understanding, the 9500 & 9600 Phenoms had an error in the processor which they refer to as TLB, so when some special event occurred that triggered that section, the processor locked up. so in order to fix this they released a patch that was integrated into the bios and acts as a microcode patch so that TLB isn't activated, but doing this causes performance decreases, apparently quite a bit so on my machine. so u can disable this patch by bios or if your bios doesnt have an option like mine, you can download a program that does it and then just set it up to disable on start.

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