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5770 upgrade

Last response: in Graphics & Displays
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March 19, 2012 9:21:09 AM

Hi I am thinking of upgrading my 5770 graphics car (I have this one its the HIS version), to something better but I dont want anything to expensive £100-150 roughly. My system specs are below, also my motherboard supports crossfire so would it just be worth getting a second 5770 instead of getting another single card?

Any ideas?

thx

Processor- Intel i5 2500k OC @ 4.5Ghz

Mobo- Gigabyte P67A-D3-B3

power supply- Bequite 530W

Ram- Kingston Hyper X DD3 4gb

More about : 5770 upgrade

March 19, 2012 9:28:41 AM

HD 6870 or GTX 560 non-Ti.
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March 19, 2012 10:18:20 AM

would the GTX560 still give me better performance than having two 5770 in crossfire ?
March 19, 2012 10:30:45 AM

In some cases less. But with the problems still sorrounding crossfire in many games, the GTX560 would be a lot better in some cases.
I am considering the same as you. you can crossfire a 6770 with a 5770 (since it is the same chip) but the 6770 needs to be "first" in the motherboard due to driver-stuff.
I will probably go for the 5770 crossfire if I can find a used one for about 55eur/£.

EDIT: http://extreme.outervision.com/PSUEngine Recommends about 460watt power supply (with some other stuff thrown in for good measure) so we should both be fine there.
EDIT2: By the way. I would like to know, what voltage did you use to get that overclock? I managed it at 1.26V which makes my max temp around 60C.
March 19, 2012 10:39:01 AM

will a 530W psu be able to run two 5770 in crossfire ?
March 19, 2012 10:42:07 AM

and for my overclock my motherboards is really weird so you can not manually change the vcore, it is changed automatically so it runs at 1.33v and I have a big fan which keeps it at about 65 Degrees at full load
March 19, 2012 10:54:50 AM

You should be able to change the voltage from automatic to manual/fixed or offset?
Either way, if you keep voltage below 1.35V and temperature below 70C you are probably fine. Although lower voltage and temp is always better for longevity.

As I said, the calculator recommended about 460w for systems like yours or mine with 2x 5770. It depends then, on the quality of the power supply (I had a 650W that could not run my system with even one 5770)
Be Quiet is pretty decent I think. I take it you have a Purepower L7 or L8? Those are either 80+ white or 80+ bronze rated. which should ensure at least a reasonable quality. I think you will be alright.
March 19, 2012 11:29:12 AM

ye i just figured out I have a voltage offset :p  but its unstable really with anything below 1.33 :/  anyway thx for the advice
March 19, 2012 12:05:44 PM

if you can find a used 5770 for $70-80 , grab it and CF. CF HD 5770 is a little better than one GTX 560/HD 6870/HD 5850
March 19, 2012 12:23:19 PM

I agree with chinoroy, if you can find a cheap 5770/6770 it can be a much cheaper alternative since you already got one. if not, go for a single strong card, then you also avoid driver issues.
About the CPU: mine is not 100% stable. One time it failed after 2 hours of prime95. another time it was stable for 3. I count that as good enough for a gaming/surfing PC however, and it have never failed while running anything else (including, for instance 15 minutes of intel burn test)
March 20, 2012 10:25:06 AM

Ye I went for crossfire I found a nice cheap second hand 5770 same brand as well which is always a bonus with crossfire :) 
!