HD 5870 & E8400 3.60Ghz - Page 2

banenwn · 10-20-2009, 03:13 PM

I was wondering if any of you guys could tell me if you think an antec earthwatts 650 watt would be strong enough to run a single radeon 5870?I hear under full load the card runs at 401 watts all i have is 2 sticks of 2 gig memory a 160 gig hardrive and a 500 gig external drive a dvd rom and an e8400.I think they tested it on an i7 920 and was 664 watts usage under load but im pretty sure an i7 draws more power then an e8400

Phædrus2401 · 10-20-2009, 03:19 PM

Using an E8400 instead of an i7 would only drop the power usage by ~20-40W, which still puts the PSU at the bleeding edge of what it could deliver. I would not run a system with a 5870on less than a quality 750W PSU, and an 850W would be preferable.

**linderman** · 10-20-2009, 06:04 PM

Quote:

Originally Posted by phædrus2401

using an e8400 instead of an i7 would only drop the power usage by ~20-40w, which still puts the psu at the bleeding edge of what it could deliver. I would not run a system with a 5870on less than a quality 750w psu, and an 850w would be preferable.

ditto

banenwn · 10-21-2009, 04:15 PM

Well by what ive read id be ok with my 650 watt i think but i tend to like to be safe when it comes to this so ill probably just get the 5850 which draws less power

domains · 10-22-2009, 12:39 PM

My brother has a 2.5 quad with 4 divided hardrives and one external on a 4890.
22inch screen
just burnt a 650 PS not sure specs but he buys top brands.

lasted 6 months.

he plays nasacar and cod 4.

domains · 10-22-2009, 01:30 PM

I just called him.... (can't seem to edit) anyways it was not a 650w sorry.

It was a 550w with 4 20amp rails.

Phædrus2401 · 10-22-2009, 02:46 PM

That right there tells me it's garbage. Four 20A rails on a 550W PSU? If each rail could deliver 20A it would be a 1000W PSU. It's probably four 20A rails sharing 30-40A from the primary.

We call for a minimum 650W PSU for the Radeon 4800 cards, and we prefer a quality 750W for the 4890. The Corsair TX650W has 52A on the +12V rail, and the Corsair TX750W has 60A. I would say the TX750W minimum for the 5870.

banenwn · 10-22-2009, 04:52 PM

Ya but the 5870 draws less power then the 4890.To be safe id deffinetly would go 750 but a good 650 should handle a 5870 no problem.My gtx 260 only draws 182 watts under load while a 5870 draws 188 watts under load.that 401 watts was system load so a 650 watt a good one would be plenty for a 5870 since my psu is powering a gtx 260 with only a 6 watt difference and i had no problems going on 6 months now.They only reccomend a minumum 500 watt but i deffinettly wouldnt go that low.750 isnt a bad reccomendation though since it would be easier on the psu.

10-20-2009, 03:13 PM	#21 (permalink)
banenwn Registered User Join Date: Oct 2009 Posts: 9 OS: windows xp service pack 3	Re: HD 5870 & E8400 3.60Ghz I was wondering if any of you guys could tell me if you think an antec earthwatts 650 watt would be strong enough to run a single radeon 5870?I hear under full load the card runs at 401 watts all i have is 2 sticks of 2 gig memory a 160 gig hardrive and a 500 gig external drive a dvd rom and an e8400.I think they tested it on an i7 920 and was 664 watts usage under load but im pretty sure an i7 draws more power then an e8400

10-20-2009, 03:19 PM	#22 (permalink)
Phædrus2401 Hardware Tech Team Join Date: Mar 2009 Location: New Orleans Posts: 3,840 OS: Vista Ultimate x64 SP1 + Ubuntu 9.04 My System	Re: HD 5870 & E8400 3.60Ghz Using an E8400 instead of an i7 would only drop the power usage by ~20-40W, which still puts the PSU at the bleeding edge of what it could deliver. I would not run a system with a 5870on less than a quality 750W PSU, and an 850W would be preferable. __________________ Good PSU brands: Corsair, SeaSonic, CWT, PC Power and Cooling, Thermaltake Toughpower, CoolerMaster Real Power Pro On 80+ Certification - PSU Information and Selection - Power Supply Myths You don't get what you don't pay for.

10-21-2009, 04:15 PM	#24 (permalink)
banenwn Registered User Join Date: Oct 2009 Posts: 9 OS: windows xp service pack 3	Re: HD 5870 & E8400 3.60Ghz Well by what ive read id be ok with my 650 watt i think but i tend to like to be safe when it comes to this so ill probably just get the 5850 which draws less power

10-22-2009, 12:39 PM	#25 (permalink)
domains Registered User Join Date: Oct 2009 Posts: 38 OS: Xp pro	Re: HD 5870 & E8400 3.60Ghz My brother has a 2.5 quad with 4 divided hardrives and one external on a 4890. 22inch screen just burnt a 650 PS not sure specs but he buys top brands. lasted 6 months. he plays nasacar and cod 4.

10-22-2009, 01:30 PM	#26 (permalink)
domains Registered User Join Date: Oct 2009 Posts: 38 OS: Xp pro	Re: HD 5870 & E8400 3.60Ghz I just called him.... (can't seem to edit) anyways it was not a 650w sorry. It was a 550w with 4 20amp rails.

10-22-2009, 02:46 PM	#27 (permalink)
Phædrus2401 Hardware Tech Team Join Date: Mar 2009 Location: New Orleans Posts: 3,840 OS: Vista Ultimate x64 SP1 + Ubuntu 9.04 My System	Re: HD 5870 & E8400 3.60Ghz That right there tells me it's garbage. Four 20A rails on a 550W PSU? If each rail could deliver 20A it would be a 1000W PSU. It's probably four 20A rails sharing 30-40A from the primary. We call for a minimum 650W PSU for the Radeon 4800 cards, and we prefer a quality 750W for the 4890. The Corsair TX650W has 52A on the +12V rail, and the Corsair TX750W has 60A. I would say the TX750W minimum for the 5870. __________________ Good PSU brands: Corsair, SeaSonic, CWT, PC Power and Cooling, Thermaltake Toughpower, CoolerMaster Real Power Pro On 80+ Certification - PSU Information and Selection - Power Supply Myths You don't get what you don't pay for.

10-22-2009, 04:52 PM	#28 (permalink)
banenwn Registered User Join Date: Oct 2009 Posts: 9 OS: windows xp service pack 3	Re: HD 5870 & E8400 3.60Ghz Ya but the 5870 draws less power then the 4890.To be safe id deffinetly would go 750 but a good 650 should handle a 5870 no problem.My gtx 260 only draws 182 watts under load while a 5870 draws 188 watts under load.that 401 watts was system load so a 650 watt a good one would be plenty for a 5870 since my psu is powering a gtx 260 with only a 6 watt difference and i had no problems going on 6 months now.They only reccomend a minumum 500 watt but i deffinettly wouldnt go that low.750 isnt a bad reccomendation though since it would be easier on the psu. Last edited by banenwn; 10-22-2009 at 04:54 PM.