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*** ATI RADEON 4850 IN STOCK! ***

Thats an idea.

Yewan grab a 3870 and wack that in with a 48x0 card or a couple of them please. :)
 
Scougar said:
My only concern that I see is this singular comment on the anandtech review:
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Hello Scougar, as others have already stated, what Anandtech said is extremely misleading and you certainly do not need a 1000 wattage power supply for a dual ATI 4850 system configuration. They also made the same mistake with the Nvidia GTX 280 which is admittedly slightly more power hungry but still not to the extent that you will need a 1000 wattage power supply to to power two Nvidia GTX 280.

Anandtech-1.jpg


Source - Here

A single ATI 3870XT pulls around 115 watts. Now, the ATI 4850 consumes around 15 to 20 watts extra, so that equals to about 135 which would equate to 11 amps. Two ATI 4850 would equal to 22 amps. If we then add for example, an Intel Q6600 overclocked to 3.3GHz which will consume about 150 watts which equals to 13 amps and then add some hard drives in rated at one amp each, the above system will be pulling about 39 amps. So, you are looking for a power supply unit that will be able to provide around 40 amps on the +12Volt rail such as the Corsair HX 520W unit. :)

lay-z-boy said:
That PSU is a heap of crap.

You can run two 8800gtx oc'd with a q6600 at 3.6 on a hx520 with 6 hard drives and room to go for a few pumps and fans.
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Hello lay-z-boy, have you got source that provides evidence of the above please because I am very dubious that the Corsair HX 520W will be able to power a system similar to what you have mentioned.

If we take a system similar to the ATI machine I have just mentioned above. A single Nvidia 8800 GTX consumes around 170 watts which equals to 14 amps so two would come to 28 amps. A Intel Q6600 running at 3.3GHz will pull about 150 watts which as said above will be 13 amps. If we then add a couple of hard drives into the equation and then some for the extra headroom, the system will be pulling about 47 amps. The Corsair HX 520 is stated to provide 40 amps on the +12Volt rail so I honestly don't think it will be able to run a machine based around a Quad Core and dual Nvidia 8800 GTX.

The Corsair HX 620W on the other hand will certainly be able to power a system like the above. :)

Ka0ticMind said:
Hiya..would a Tagan TG800-BZ 800w Modular BZ Series PSU be ok to run two 4870 cards and a Quad Q9450 cpu?
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Hello Ka0ticMind, I am not entirely sure of the power requirements of the ATI 4870 but I would be very surprised if a 800 wattage power supply unit from Tagan wont be able to power a system consisting of two ATI 4870 graphics cards. :)
 
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easyrider said:
Whats with the attitude?:rolleyes:
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Sorry maybe that was a bit OTT. It's just I've seen it posted about 20 times now that "great cards, shame you need a 1200W supply"when if you look at the computers been sold with them in and every other review where they have run at 6700W and 600W it was just starting to get at me that everybody keeps quoting that one review.
 
I would be very shocked if the HX620 couldn't power two HD4850s in Crossfire.

I suspect it might even be able to cope with three.

[Edit] Hang on, Anandtech are contradicting themselves. They claim 335.7W load, but it won't work on a 1kW?

All that tells me is never to buy an OCZ PSU, lol. :D
 
Greebo said:
Sorry maybe that was a bit OTT. It's just I've seen it posted about 20 times now that "great cards, shame you need a 1200W supply"when if you look at the computers been sold with them in and every other review where they have run at 6700W and 600W it was just starting to get at me that everybody keeps quoting that one review.
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OK no problem,

I'm glad this is not the case.

My 620w Enermax Liberty does not really want to be changed.
 
I am 100% certain that my HX520 could handle crossfire 4850.

Fact-a-mundo.

OCZ = Fail.
 
easyrider said:
The only thing that is dissapointing is the fact you need over a 1000w PSU for xfire
Click to expand...

Very surprised you didn't pick up on the oddity of the review before people had to point it out to you :p

That review worries me I've learnt over time not to trust Anandtech.
 
Fire Wizard said:
Hello lay-z-boy, have you got source that provides evidence of the above please because I am very dubious that the Corsair HX 520W will be able to power a system similar to what you have mentioned.

If we take a system similar to the ATI machine I have just mentioned above. A single Nvidia 8800 GTX consumes around 170 watts which equals to 14 amps so two would come to 28 amps. A Intel Q6600 running at 3.3GHz will pull about 150 watts which as said above will be 13 amps. If we then add a couple of hard drives into the equation and then some for the extra headroom, the system will be pulling about 47 amps. The Corsair HX 520 is stated to provide 40 amps on the +12Volt rail so I honestly don't think it will be able to run a machine based around a Quad Core and dual Nvidia 8800 GTX.

The Corsair HX 620W on the other hand will certainly be able to power a system like the above
Click to expand...

Yeah it's called my rig.

Q6600 @ 3.6
780i + 4gb + elite pro + 2 odd
8800gtx sli, oc'd
5 os drives and 1 storage drive
2 deltas + mcp655 + case fans and cathodes
 
There is an ATI presentation floating around that states:

-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 CrossFreX technology in dual mode)

-ATI Radeon HD 4870 system requirements
500 Watt or greater power supply with two 75 Watt 6-pin PCI Express power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFreX technology in dual mode)
 
should i get a saphire one for £125 or wait for a his ICE Q version....

I currently have a 7800GT who's memory is borked (BSODs a good 3-4 times a day while gaming, due to artifacting and nvidia drivers etc)
 
The Sapphire fans are pretty loud. I'm hopeful they run cool enough to fit a passive cooler, or failing that, a water cooler.
 
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