Would an Athlon II 620 bottleneck a 6870?

[Daichin]

Hi,
I've been looking into replacing the crossfired 5750s I have in my computer currently due to a number of issues with crossfire and in order to improve performance.

My system specs are:

Athlon II X4 620 @ Stock 2.6ghz
DFI Lan Party 790FXB-M2RSH AM2+
4GB G.Skill DDR2 2400 @ 800mhz
2 x Sapphire Ati Radeon HD 5750

Will the Athlon 620 bottleneck a 6870 much? It bottlenecks the 5750s a little in some games at the moment, and the 6870 should perform a bit better. However, I'm not convinced that crossfire isn't to blame for the high cpu usage.

Thanks for any help you can offer.

 

[wiinippongamer]

2 5750's > 6870.

It shouldn't bottleneck and if it does it'd be by a slight margin.

 

[Cygnus x-1]

It will a little, but you might not see it but in synthetic benchmarks. Can you overclock the cpu, or is that not something you want to try?

 

[Daichin]

I'd be willing to try it and have experimented with it. Currently, I need to use my computer on a daily basis, so I'm not 100% keen on it blowing up on me and have reverted it to stock.

I did manage to get it to a stable 3ghz and could bring it back to that with some slightly better cooling (the temperatures were a little on the high side - I'm on a 2 year old stock HSF).

It stopped being stable if I brought the FSB any higher and I'm not really sure about the memory frequency either - I haven't overclocked anything before, really.

CPU-Z dump is here, looking through emails: http://valid.canardpc.com/show_oc.php?id=2057891

 

[Cygnus x-1]

There are plenty of guides and people here that will help. A mild 3.0ghz should be perfectly safe and do-able on stock cooling.

 

[wiinippongamer]

It'll be fine even at stock, if you want to overclock and need a better heatsink I highly recommend you the Hyper 212+, best bang for buck out there

 

[Daichin]

Thanks a lot for the help - I'll do a bit more experimenting and take a look at some guides for overclocking if the performance is bad.