Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > HD 4850 Power requirements
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rags_20   10-29-2008 at 02:50:47 PM

Mercury AP-2400

Voltage 115/230 V
3.3V 5V 12V
20A 14A 14A

Current
10A/6A
+12V -12V +5V
13A 0.3A 2.5A

These are the specs of my 400W PSU. See sig. for sys. specs.
I want to OC the HD 4850 too, so would like enough power for that.

Is this PSU enough?

Should I get the HD 4850 512MB or wait for the 5xxx series?

------------------------------ Intel Core 2 Quad Q6600 @ 2.4 | Thermalright Ultima 90 120mm fan | Intel DG31PR | 4 GB DDR2 @ 800MHz | HD 4850 512 GDDR3 | Corsair VX450 | Samsung 22x DVD RW | Windows Vista HP 32-bit/ Windows 7 64-bit dual boot | Samsung SyncMaster 19" LCD VGA 920NW |
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col-p-todd   10-29-2008 at 03:06:53 PM
- 0 +

I think ocing the HD4850 is out of the question, i,m not even sure if your psu can handle a stock HD4850. :s

Reply to col-p-todd
outlw6669   10-29-2008 at 03:11:07 PM
- 0 +

No, your PSU will die a fiery death.
You need a QUALITY 450w+ PSU from Corsair, PCP&C, Enermax, Seasonic or the Antec Earthwatts line.

Quote :

ATI Radeon™ HD 4850 System Requirements

450 Watt or greater power supply with 75 Watt 6-pin PCI Express® power connector recommended (550 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual mode)


http://ati.amd.com/products/Radeon [...] ments.html

A 4850 will be much, much better than your current 8600GT.
As cheap as they are now, why put off the upgrade.

Message quoted 1 times
------------------------------ If the automobile had followed the same development cycle as the computer, a Rolls-Royce today would cost $100, get a million miles to the gallon, and explode once a year, killing everyone inside.
PSA
 Reply to outlw6669
outlw6669   10-29-2008 at 03:24:25 PM
- 0 +

I just want to reiterate how bad your current PSU is.
The Mercury website no longer has your 2400 PSU listed but it's next of kin, the 2450, only has a 65% efficiency rating!! Even if you do not upgrade your GPU now, you really need to get a better PSU. The one you have now is a disaster waiting to happen.

------------------------------ If the automobile had followed the same development cycle as the computer, a Rolls-Royce today would cost $100, get a million miles to the gallon, and explode once a year, killing everyone inside.
PSA
 Reply to outlw6669
aevm   10-29-2008 at 03:56:17 PM
- 0 +

outlw6669 wrote :

No, your PSU will die a fiery death.
You need a QUALITY 450w+ PSU from Corsair, PCP&C, Enermax, Seasonic or the Antec Earthwatts line.

Quote :

ATI Radeon™ HD 4850 System Requirements

450 Watt or greater power supply with 75 Watt 6-pin PCI Express® power connector recommended (550 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual mode)


http://ati.amd.com/products/Radeon [...] ments.html

A 4850 will be much, much better than your current 8600GT.
As cheap as they are now, why put off the upgrade.



True. Even the HD 3850 is twice as fast as the 8600GT in most benchmarks I've seen. The HD 4850 would be just incredible compared to that. The 8600GT is just not a gaming card.

If you need a decent PSU for as little cash as possible, the StealthXStream 600W is $50 after rebate and shipping.
http://www.newegg.com/Product/Prod [...] 6817341010

Reply to aevm
rags_20   10-29-2008 at 05:39:54 PM
- 0 +

Too bad I don't live in the US.

Reply to rags_20
aevm   10-29-2008 at 05:42:26 PM
- 0 +

If you're in Canada or the UK we can find you some links too, just tell us which country it is.

Reply to aevm
rags_20   10-29-2008 at 05:45:03 PM
- 0 +

the place sucks for good computer parts :(

Reply to rags_20
aevm   10-29-2008 at 06:10:05 PM
- 0 +

Ouch! I have no clue at all about computer stores in India, sorry. I'll let you check your local stores and online retailers then.

Just keep in mind the minimum requirements (450W for HD 4850, 550W for HD 4850 Crossfire).

Use this list too:
http://www.eggxpert.com/forums/per [...] spx#323050

Reply to aevm
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