• New Graphics Card to Replace HD4550
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[url]http://www.hardwareguru.com/article/amd-ati-radeon-hd-4850-review-force-3d--powercolor/7[/url] they read 269W. That PSU is 264W, or 22 Amps. It really isn't worth the risk, not to mention pathetic efficiency that would result from the PSU running flat out if it did actually work.
[QUOTE=ferrus;22785435][url]http://www.hardwareguru.com/article/amd-ati-radeon-hd-4850-review-force-3d--powercolor/7[/url] they read 269W. That PSU is 264W, or 22 Amps. It really isn't worth the risk, not to mention pathetic efficiency that would result from the PSU running flat out if it did actually work.[/QUOTE] Ahh found the problem: [quote=article title]AMD ATI Radeon HD 4850 [b]Crossfire[/b][/quote] [editline]07:34PM[/editline] The card'll work fine alone on that power supply
The article is clearly about a single 4850 if you look through it. Two 4850s draw much more than 270W: [url]http://www.tweaktown.com/reviews/1471/sapphire_radeon_hd_4850_in_crossfire/index13.html[/url]
snip [editline]09:17PM[/editline] [QUOTE=ferrus;22785828]The article is clearly about a single 4850 if you look through it. Two 4850s draw much more than 270W: [url]http://www.tweaktown.com/reviews/1471/sapphire_radeon_hd_4850_in_crossfire/index13.html[/url][/QUOTE] And the article clearly states above the energy consumption graph: [Quote=Guru3d]Our single card test system is [b]a Core 2 Duo X6800 Extreme Processor[/b]the nForce 680i SLI mainboard, a [b]passive watercooling solution on the CPU[/b], 2GB memory, DVD-ROM and WD Raptor [/quote] At the wall it's 270 watts. Multiply it by .85 for efficiency and you see the psu only needs to put out 230 watts. I'm not even gonna bother looking up how much energy a water cooling loop and c2d extreme processor take out of that 230 watts. OP can get even a 4870 comfortably.
[QUOTE]OP can get even a 4870 comfortably[/QUOTE] Comfortably? :sigh: [url]http://www.tomshardware.com/reviews/radeon-hd-4870,1964-15.html[/url]
If what you said about the power supply having a 22A rail, then it's fucking fine. a 4870 only takes up 30 more watts than a 4850. And after proving that the system wouldn't take anything more than 180 watts at full load with a 4850, a 4870 would fare fine as well, that only bumps consumption up to 210 watts. [editline]09:45PM[/editline] Also this [QUOTE='[EG] Pepper;22784915']Thats nothing i got a C2D E6600 and a 8800GS on a PSU that only has a 10 amp rail and i built it in january[/QUOTE]
I don't think he shouldn't even take the risk of having a Dell PSU power you shit for two months.. He should just save up for new comp.
He just wants the computer for LAN parties, and it's perfectly capable. Again I've run high draw sytems with various oem power supplies and they've all worked fine. The athlon system I talked about before has been running since february. [editline]10:05AM[/editline] These are different from the $10 power supplies you buy from newegg and pop right after being plugged in. The psu in his system wouldn't even be put under full load, it'd be at a comfortable 2/3 capacity, 66%.
On a 300W PSU? NO. FUCKING. WAY.
I don't have a fucking clue what you're all talking about here. I think drummerundrcovr is trying to say that i can use the 4850, but everyone else is saying not to. Correct?
[QUOTE=ferrus;22787940]Comfortably? :sigh: [url]http://www.tomshardware.com/reviews/radeon-hd-4870,1964-15.html[/url][/QUOTE] -snipmostofthis- high consumption because of the high end hardware: Intel Core 2 Quad QX6850 Asus P5E3 Deluxe (Intel X38) motherboard -snipping for rudeness- :smith: OP, The 12 volt rail is what most of the main components use, ie the cpu, graphics card(s), hard drives, fans, most lights if you have them. Your psu has a 22Amp 12 volt rail. That equates into 264 watts. Ferrus is trying to prove that the card will stress the power supply too much and die. He's linking to test articles that use high end cpu's and high end motherboards with 15K rpm hard drives and lots of special stuff, which will obviously bring power consumption up to 270-280, in one case it went near 300 watts. I'm going to state this again: Your system would only take up 170-185 watts on full load with a 4850. That's far enough from the max load it can handle where the psu will operate comfortably. Efficiency probably isn't the best because not many oem psu's are efficient (they waste more energy when converting 120AC to 12DC). In reality you'd see about a 1 cent increase in your electric bill, and that's even questionable.
There's is no need to get aggressive, it's only a forum discussion. [url]http://extreme.outervision.com/psucalculatorlite.jsp[/url] It came up with 400W, and 500 if you add 50% capacitor aging, which may be more suited since this PC is probably at least a few years old. And before you pounce on me I know these calculators are to be taken lightly, so what it does is give you a rough idea. One other thing, if you do choose to use a 4850/4870 with this PSU, make sure you have the correct amount of PCI-E connectors.
PSU calculators are almost as bad the sites that tell you if your system can handle a game. It doesn't tell you what it's basing the "recommended" wattage off of. And just about every graphics card comes with a pcie power adapter.
[QUOTE=drummerundrcovr;22800236]PSU calculators are almost as bad the sites that tell you if your system can handle a game. It doesn't tell you what it's basing the "recommended" wattage off of. [/QUOTE] True, but I this capacitor aging business might be relevant. Not sure.
Can you find out whether your case has an ATX form factor? If it doesn't then it won't fit a new PSU anyways [editline]08:51PM[/editline] [QUOTE=drummerundrcovr;22800236]And just about every graphics card comes with a pcie power adapter.[/QUOTE] Even old 320W dell PSUs?
Better get a new PSU anyway. I got a 425W PSU, and if what you are saying is true... CrossFireX 5870, here I come! :woop: Though it probably don't got the neccesary connectors..
[QUOTE=FINLEY;22803745]Can you find out whether your case has an ATX form factor? If it doesn't then it won't fit a new PSU anyways [editline]08:51PM[/editline] Even old 320W dell PSUs?[/QUOTE] Nah the graphics cards themselves come with them. I really haven't seen any newer graphics cards come without at least one. [editline]05:16PM[/editline] godamnit and greece just lost :saddowns:
Don't risk it.
[QUOTE=Neddix;22759959]UK 5670's [url]http://www.ebuyer.com/product/190648[/url] [b]512mb Version £70[/b] But if your monitor is 1680x1050 or greater then save up and go with [url]http://www.ebuyer.com/product/189620[/url] [b] 1gb Version £88 [/b][/QUOTE] I'd second that. But really for todays games you should be looking at a higher end build, perhaps save up and buy a new pc?
[QUOTE=FINLEY;22803745]Can you find out whether your case has an ATX form factor? If it doesn't then it won't fit a new PSU anyways [editline]08:51PM[/editline] Even old 320W dell PSUs?[/QUOTE] 320W dell PSUs aren't graphic cards
OP just save up for new PC. And if you are just using it for LAN parties like what drummerundrcovr said, just get a 4650/4670/5670 since they are perfect for that resolution.
LAN parties are for fat people
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