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Will a Corsair HX620w Modular sufficiently power a HD4870x2?

Forum Graphic & Displays : ATI - Will a Corsair HX620w Modular sufficiently power a HD4870x2?

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Project_Entry   12-16-2008 at 05:20:26 PM

Hi there, was just wondering if the Corsair HX620w is capable of powering the HD4870X2's (i'm looking specifically at the Powercolor HD4870X2 750Mhz 2Gb DDR5 PCI-E)

Also wondering if the 6+2 PCI-E cable supplied with the PSU is capable of handling the 6 + 8 pin PCI-E power requirements for the card or would I have to rely on the convertor provided by the manufacturer?

Thanks in advance for any help :D

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Kaldor   12-16-2008 at 05:30:37 PM
- 0 +

Should be OK unless you have a bunch of drives or a very overclocked CPU. And the 6+2 cable will work as well.

Message quoted 1 times
Reply to Kaldor
M-Ajesty   12-16-2008 at 06:18:03 PM
- -2 +

I don't think a 620W can handle a HD4870, even if it's Corsair. That PSU is a very good one by the way.

I would go for a 700W or higher. Corsair recommended.

Message quoted 1 times
Reply to M-Ajesty
einstein4pres   12-16-2008 at 06:28:34 PM
- 1 +

Hey, how about we find a ... source?
http://www.anandtech.com/video/sho [...] =3372&p=10

This clearly shows a single 4870x2 under load drawing ~450W from the wall. Now, I don't remember what reference system they are using, but it's probably not a light-weight in terms of power draw.

Thus, unless you're running a monster system, I expect a HX620 to be plenty of power.

Message quoted 1 times
Reply to einstein4pres
wh3resmycar   12-16-2008 at 06:40:42 PM
- 0 +

M-Ajesty wrote :

I don't think a 620W can handle a HD4870, even if it's Corsair. That PSU is a very good one by the way.

I would go for a 700W or higher. Corsair recommended.




be my guest

amps and rails says a 520hx can do a 4870.

Reply to wh3resmycar
zenmaster   12-16-2008 at 06:45:24 PM
- 0 +

einstein4pres wrote :

Hey, how about we find a ... source?
http://www.anandtech.com/video/sho [...] =3372&p=10

This clearly shows a single 4870x2 under load drawing ~450W from the wall. Now, I don't remember what reference system they are using, but it's probably not a light-weight in terms of power draw.

Thus, unless you're running a monster system, I expect a HX620 to be plenty of power.



The HX620 has PLENTY of power.
In addition, the HX620 is rated at "MAX SUSTAINED LOAD", not "PEAK LOAD".

Based on the review above, and many more the 620W Corsair has LOTS of power to spare..........

------------------------------ If its good in theory but not in practice,
its not good theory.
 Reply to zenmaster
col-p-todd   12-16-2008 at 06:48:58 PM
- 0 +

Kaldor wrote :

Should be OK unless you have a bunch of drives or a very overclocked CPU. And the 6+2 cable will work as well.



as kaldor said you will be ok for sure but if your going to overclock then you might want to get a bigger psu. the 4870 X2 only really needs the 8 pin if you overclock the gpu, otherwise 2 6 pins will work just as good.

Reply to col-p-todd
djbrad007   12-16-2008 at 07:24:52 PM
- 0 +

Hi,

you can order new 6+8 cables at corsair website for free.

They sent me 2x 6+8 this year for nothing. Took 2 weeks to receive them.

Brad

Message quoted 1 times
Reply to djbrad007
col-p-todd   12-16-2008 at 07:44:22 PM
- 0 +

djbrad007 wrote :

Hi,

you can order new 6+8 cables at corsair website for free.

They sent me 2x 6+8 this year for nothing. Took 2 weeks to receive them.

Brad




no way that would be nice do you have a link were i can go to to get an 8 pin cable from corsair?

Message quoted 1 times
Reply to col-p-todd
M-Ajesty   12-16-2008 at 07:50:42 PM
- 0 +

I'm sorry, my bad, I meant the HD4870x2. Yes, a 620hx can run a 4870.

But hey, do you even believe those calculators? Get your mind straight mate, those calculators are telling me that a 520hx can run a HD4870x2.

Message quoted 1 times
Reply to M-Ajesty
col-p-todd   12-16-2008 at 07:55:32 PM
- 0 +

col-p-todd wrote :

no way that would be nice do you have a link were i can go to to get an 8 pin cable from corsair?



i think i found it

http://www.asktheramguy.com/v3/showthread.php?t=73054

Reply to col-p-todd
MooseMuffin   12-16-2008 at 08:11:30 PM
- 0 +

M-Ajesty wrote :

But hey, do you even believe those calculators? Get your mind straight mate, those calculators are telling me that a 520hx can run a HD4870x2.



Why wouldn't you believe the calculator? Why would they tell you one of their cheaper psu's can handle something that it can't? Wouldn't it be in their best interest to tell you that you need one of their more expensive ones?

Reply to MooseMuffin
M-Ajesty   12-16-2008 at 08:22:48 PM
- 0 +

My advise is: Go for a 700W or higher. Just to have space left to let it make peaks.
Remember that a PSU shouldn't be used for more than 80% of it's capabilities.

(Argh, why can't we edit posts?)

Reply to M-Ajesty
M-Ajesty   12-16-2008 at 08:25:01 PM
- 0 +

I was too late, again.

@ MooseMuffin: Have you ever had experiences with a HD4870x2 on a 520W? Apparently not.

Reply to M-Ajesty
Billiardicus   12-16-2008 at 08:39:12 PM
- 0 +

I like this calculator:
http://web.aanet.com.au/SnooP/psucalc.php

It's unbiased. I haven't actually tested it's validity though.

Message quoted 1 times
Reply to Billiardicus
einstein4pres   12-16-2008 at 09:11:02 PM
- 0 +

Billiardicus wrote :

I like this calculator:
http://web.aanet.com.au/SnooP/psucalc.php

It's unbiased. I haven't actually tested it's validity though.



Wow. I actually tested it, and it comes up with reasonable numbers!!!

It's pretty close to my system draw (150W gaming, it claims 175), though I had to make some approximations regarding components.

Reply to einstein4pres
Project_Entry   12-17-2008 at 07:14:00 AM
- 0 +

Thanks for the help guys. I'll probably go with getting a 700w then :D

Thanks again. All your help and suggestions have been very helpful :D

Merry Christmas!

Reply to Project_Entry
wh3resmycar   12-17-2008 at 05:38:00 PM
- 0 +

i hope you're not just getting a 700w psu because its says 700w. please be sure with the amps on the 12v rails.

good luck.

Reply to wh3resmycar
Project_Entry   12-18-2008 at 12:27:56 AM
- 0 +

The wattage listed is the sustained wattage, not the peak, so it's cool :D

It's a Coolermaster RP 700w Modular.

Reply to Project_Entry
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