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Will e7500 2.93GHz bottleneck radeon 7850?

Last response: in Graphics & Displays
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July 28, 2012 7:44:14 PM

i have 4GB ram and CPU is not overclocked, nor do i intend to overclock it. PSU is 500w fortron saga ii so according to various sources it should be enough for 7850, ie. 500W is prescribed for 7850 and 550W is prescribed for 7870.
currently i am running 5750 on 1920x1080 and am getting 30-40 fps in max payne 3, skyrim or GTA IV.

1. what kind of performance boost can i expect after graphic card upgrade? according to gpu benchmark on anandtech performance boost from 5750 to 7850 is like 100-120% toug it would be little less cause of pci 2.0 card slot on motherboard.
http://www.anandtech.com/bench/Product/537?vs=549

2. would another 4GB ram add performance in games, and how much? i have installed win 7 64bit edition

3. could you link some good reviews about bottlenecks? i tried to google but couldnot find anything major

thank you very much
a c 190 U Graphics card
July 28, 2012 7:58:53 PM

That power supply, regardless of how hard it is to find information on it, has an 80% efficiency which should be enough to run the card.

Though yes, that 7850 is going to end up being bottlenecked by the CPU.

PCI-E 2.0 makes almost no difference in GPU performance.

That's a pretty old and slow CPU to be honest.
July 28, 2012 8:18:07 PM

but how much? what does it mean. if i am getting 30fps, will i be getting instead of expected 60fps, 45-50?

thank you
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a b U Graphics card
July 28, 2012 8:31:15 PM

Hi, you are not going to find a simple chart or have a quick answer about "bottlenecking". May I ask why you won't overclock your CPU? That would give your GPU a little more breathing room.

I recently switched from a HD5750 to crossfire 5750/5770 then to a GTX480. I was no where close to 30 fps at 1920x1200 for skyrim on the 5750(had to drop to 1680x1050), and with crossfire there were too many stuttering issues.

The GTX480 (performs close to 7850) was a huge performance step, I now play at 1920x1200 and have setting turned to high on everything, and I even have to set my vsync or I get way more than 60fps.

Fungi
July 28, 2012 9:25:48 PM

well i run skyrim on 1920x1080 2AA and 8AF and am getting the 30-40fps. when i changed to 8AA and 16AF its still at 30-40 tough sometimes it drops rapidly and i experience game instability. anyway i see cpu at 85-90% and gpu on 100%, so if i were to by a 7850 question is how much it would increase my fps.
August 5, 2012 12:22:13 PM

ok, so i changed my approach, as i buyed lower medium pc 2 and 1/4 years ago, next i will go totally overkill with a new rig.
I wanted to go originally with i3770, 8gb ram, gigabyte z77 mb and gigabyte 2x 7950 or 2x 7970 and 1k psu coolermaster silent pro m2.

i am currently getting full HD res 1080p on my existing 5750 with 25-30+ with 8MSAA, 16AF and FXAA so i am kind of ok. tough Far Cry 2 was hell and GTA IV was barely 25-30+fps. i have one lcd iiyama b2475hds

so my plan for future is to wait 8 months for haswell and then take the equiualent of i3770 (i never overclock) and 2x top gigabyte hd 7xxx or 8xxx series. well maybe just 7990 if tests and price convince me. i hope the 1k psu will be enough to hold new system with possibly 2x 7990 after some time :)  i mean its amd it wont be like its nvidia cards hopefully.
i will also add a ssd 128gb adata sx900 synchronious, so i am looking on 1.6k starting price, based on how much i intentd to spend on gpu ...

only question is, will i buy new case, dvd, fans for 50eur or buy win8 oem for cca 100eur and keep old pc as backup pc. i mean i dont think i will be able to sell my old pc for much next march april ...
c2d e7500 2.93GHz
gigabyte ati 5750 1gb ram
gigabyte mb for c2d or c2q
2x2gb kingston 800mhz ddr2 ram
a c 172 U Graphics card
August 5, 2012 1:56:03 PM

You can get by but you have no choice but to overclock, I got a e7200 that I am using till I rebuild my i5 rig and it can manage but only if you overclock. 3.5ghz+ a 7850 won't be hindered to badly but the rest of the system can't be crappy such as having a slow hard drive or ram with terrible timings.

My 775 era e7200 system, XFX 780i, 8gb of ddr2 1066 @ 800speeds, 1TB WD blue, gtx 460 at stock clocks but modded for improved cooling, and a antec he550. The cpu is also modded for improved cooling as I had removed the ihs to replace the original stock compound with as5 which improved overclocking slightly. I often manage 3.5ghz to sometimes a little over 3.6ghz but my sample isn't great. Yours will likely hit similar clocks without any modding.
August 5, 2012 6:45:42 PM

funguseater said:
Hi, you are not going to find a simple chart or have a quick answer about "bottlenecking". May I ask why you won't overclock your CPU? That would give your GPU a little more breathing room.

I recently switched from a HD5750 to crossfire 5750/5770 then to a GTX480. I was no where close to 30 fps at 1920x1200 for skyrim on the 5750(had to drop to 1680x1050), and with crossfire there were too many stuttering issues.

The GTX480 (performs close to 7850) was a huge performance step, I now play at 1920x1200 and have setting turned to high on everything, and I even have to set my vsync or I get way more than 60fps.

Fungi

my system has 4gb ram, 2,93GHz cpu so its quite balanced, possibly you had just 2gb ram and or 2.5/2.66GHz CPU?
!