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post #11 of 16
yep, it should be fine with your psu. i would advice against OCing the gfx card cause it will give you pretty decent performance at stock. You can OC it later once you get a better psu.
Edited by leopold1985 - 2/19/11 at 1:08pm
    
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post #12 of 16
i will say this. You will be fine but the PSU isnt the best quality so dont push it with overclocking till you get a better quality unit.

@ full load you will see around 280 watts on the 460
Edited by 4LC4PON3 - 2/19/11 at 3:11pm
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post #13 of 16
Quote:
Originally Posted by szymon247 View Post
^ Yes, I have 4GB of ram.

Thanks very much guys. One last thing. Will my PSU handle that? It's a 560W Chieftec CFT-560A-12S. MSI suggests 24A on the 12V line. I will not OC much but I don't want to fry my PSU.
Official max values look like this:
+5V: 30 A
+12V: 23 A
+12V1: 14 A
+12V2: 23 A
-12V: 0.5 A
-5Vsb: 2.5 A

And Max 440W on 12V lines.
I see that the GTX460 is able to use up almost 350W under heavy load.
It will be fine, but you should take care how you power the gfx card. Since it needs 24A, and you have at most 23A per rail you should be do a bit of load balancing. Here's my take: the CPU from +12V and the graphics card from both +12V1 and +12V2 - for example the 6pin connector from +12V1 and the 8pin from +12V2.

Cheers
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post #14 of 16
Thread Starter 
Thanks. That's what I'll try to do. I believe that my current GPU is powered by a single 14A line at the moment.
Doesn't the PCI-E have its own power though? Excuse me for being an amateur but if I remember correctly my first 7600GT was just plugged in the PCI-E port without any external power lines connected. Wouldn't that plus a 23A 12V2 line be enough?
post #15 of 16
Quote:
Originally Posted by szymon247 View Post
Thanks. That's what I'll try to do. I believe that my current GPU is powered by a single 14A line at the moment.
Doesn't the PCI-E have its own power though? Excuse me for being an amateur but if I remember correctly my first 7600GT was just plugged in the PCI-E port without any external power lines connected. Wouldn't that plus a 23A 12V2 line be enough?
The PCIe slot can supply 75W, so you can shave ~5.5A from the power needed from the PCIe connectors. However, even these 5.5A come from somewhere, check your PSU manual to see from which one; it should be from the rail that powers the ATX plug.

I've noticed something, but it may be a typo. 440W on the +12V rails means only 36.6A, not nearly the 23+14+23. Supposing the same ratio between the PSU amp rating, but limiting to a total of 440W the rails could supply around 13/8/13 amps. Newer PSUs have one +12V rail so load balancing is much easier.

...the good part is the 460 or the 5850 don't need more than 180W, which is around 15 Amps. They may write 23A on the box, but that's only in order to play it safe.
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post #16 of 16
Thread Starter 
Thanks. I have a pretty good deal on a Gigabyte GTX 460 (the 768mb version) however I hear about a coil noise problem. However all cases when it happens seem to affect the 1GB version. I don't know whether the 768mb version is not affected by that problem or is it just less popular and that's why I don't see people complaining. I know though that any high-pitched noise coming from my PC would probably annoy me. I already have my PSU fan generating very quiet but high-pitched noise when it's on full throttle.

I don't know if it's worth paying 50$ more for the MSI Cyclone card if that noise is the only thing that I'm afraid of.

I like that the Gigabyte one seems to have more quiet cooling and it seems to blow the hot air outside of the PC box while the Cyclone does not which might significantly raise the temperature in my PC.

edit: In a bit worse store there's an offer for Sapphire Radeon 6850 1gb ddr5 for just in between the Gigabyte GTX460 768mb and MSI GTX460 price. However I'm not sure if I want to make a switch to ATI since I always had Nvidia cards and I can't find as many reviews of that Sapphire card. eh.
Edited by szymon247 - 2/21/11 at 7:37am
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