Am I suffering from a bottleneck?

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depredador93

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Sep 4, 2013
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Hello, so I recently bought an HD 7870 OC Edition to replace my HD 6570 on my A6-5400K CPU to finally find out that the improvement was almost non-noticeable.

I tested the new GPU on Rome 2 (patched up):
On campaign map I had around 20 FPS on lowest resolution and lowest possible settings.
Battles are unplayable too, as soon as the armies engage FPS drops down to less than 10.

Tried it on FarCry 3: High settings, 1400*900 resolution (highest I have) got me 20-35 FPS.
I see people playing it with the same card on Ultra with a steady 50 - 60 FPS.

What's going on? It looks like a bottleneck because of my CPU but I'm not sure...
Do I have to replace my CPU now? My PSU is of only 500 W, so I suppose I need a new one too? Or should I just send the card back for my money? Help! Thanks.

This is my comp right now:
Power: FSP500-60APN85+
CPU: AMD A6-5400K
Chipset: AMD A75
Graphics: Radeon HD 7870 OC Edition
RAM: 8GB DDR3-1600
Hard Drive: 1TB SATA2 3.5”
 
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girogalllas

girogalllas

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May 12, 2013
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Very strange. BUT, you can check if the problem is with your CPU is to do the following:
Open Task Manager and then open your game. Play for a couple of minutes and then go back and check your CPU usage. Are any cores running full throttle?
 
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DragonChase

DragonChase

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May 22, 2013
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It might even be ram sinds you are using AMD, that cpu is comfortable with Ram of 1866mhz and you have 1600mhz.

In AMD cpu's you can have a massive performance drop alone because of this, what you could do is OC the ram to 1866mhz or buy new one.

How did your old GPU perform compared to other same gpu?
 
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hang-the-9

hang-the-9

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Mar 25, 2010
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It's probably your CPU, the power supply is fine, and so is the card to run on good speeds. Don't go by YouTube videos unless they list exactly what specs that have, resolution they are on, if things are overclocked, etc...

The recommended CPU for Rome Total War 2 is
"Processor:2nd Generation Intel Core i5 processor (or greater) "
which is well over that A6 you have. Although you should be able to play on low settings with it.

The only thing to try is to run some benchmarks on the system, then overclock the CPU (if your motherboard has those options), and benchmark again. If the scores go up, you could use a faster CPU.
 
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depredador93

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Sep 4, 2013
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Today I OCed my CPU to 4 GHz. Nothing improved in Rome 2, in fact I lost 5 - 10 FPS using the overclock and lots of weird sounds come from my speakers when start up the game.

I was thinking of sacrificing $180 for an FX-8350 CPU but it seems that it's not compatible with my F2A85-V motherboard1, plus I'd also need a new PSU... That's almost buying a new comp and mine's 4 weeks old, seems that I made a bad purchase.

I'm giving up, PC gaming is not for me, I'll just send the GPU back and invest it into a console.

Thanks for the help.
 
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DragonChase

DragonChase

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May 22, 2013
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unwise decision, rome total war 2 is very very badly optimised, it even makes a disgrace of my PC which is 1500 dollars.

On the other hand it is SO demanding, do not forget your PC is stronger then the new generation consoles and you can get cheaper games for it.

If you have bought it at some place call them in and see why it does happen or return with warranty after a call.

you have certainly made a bad call going all AMD, its not AMD's fault but your own for buying a budget CPU years old.

The 7870 is already more powerfull then the PS4 but then again your CPU should be perfectly fine!.
What if you missed a setting and your processor goes all crazy in crossfire CPU+GPU...drivers for that are not fine at all and highly direscommended.

Thats why i highly recommend contacting the company that sold you this.
 
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hang-the-9

hang-the-9

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Mar 25, 2010
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You don't want to start overclocking that high, especially if you don't have a good cooling setup for the CPU. The video card is fine, the issue is that it's paired with a pretty slow CPU. And as you saw, Rome Total War 2 takes a pretty fast CPU to run well. The i5 they recommend is faster than the A10 AMD chip and you have one several tiers bellow even that one. You should be OK for many other games though, or see if you can upgrade the system to an A10 chip. Just need to watch what you buy, many stores sell "gaming" computers with slow CPUs and video cards, it seems to them a "gaming" system is just anything with an add-on video card and a larger case with maybe some lights.
 
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depredador93

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Sep 4, 2013
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Okay, thanks for the support guys. I sent back the HD 7870 and since I kind of lost 30€ because of transportation means I will upgrade my rig around Christmas and try to get the best out of it. Since I'm kind of limited by the F2 socket motherboard I thought that the best I can get would be an A10 6800K and a HD 7770. Would that be a good choice? Is my comp going to be compatible with it and work well? No bottlenecks and weird stuff?

I know the CPU is not really meant for gaming but I don't wanna buy a new MB because that would be almost buying a whole new computer.

Again, thanks a lot.
 
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Melderv

Melderv

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Oct 1, 2013
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I ran Far Cry 3 on 1360x768 at 41fps at High with only an AMD A4-3400, 2GB of 1333 DDR3 RAM, and an HD 7770. You should not settle for an HD 7770 when you already have an HD 7870. The best upgrade you can give for the CPU is to make it a quad-core, but it won't help if you already have one and upgrade it to the next step. A10 isn't bad, but sacrificing a 7870 to get it won't make you better off.
 
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