That is the graphics card that is currently on the way to my home (With the rest of my computer). I have a 650W power supply and I was wondering. How much power would I need to CrossFire it with another one of those? My birthday is in 5 months and I'm planning on upgrading then.
Says 500w total system power for a single card, so for two I would say 650-700w would be fine.
The card itself seems to use ~100-140w on it's own (slightly less since the secondary card won't be at 100%) so 650 might be cutting it slightly close while 700 would give you a lot of wiggle room.
650 will be fine, unless you overclock the CPU (which I suppose you will, as you have a P67 mobo, and there is no reason to get a "k" CPU if you aren't OCing or using onboard graphics). If you OC it, you'll probably need at least 750 watts.
650 will be fine, unless you overclock the CPU (which I suppose you will, as you have a P67 mobo, and there is no reason to get a "k" CPU if you aren't OCing or using onboard graphics). If you OC it, you'll probably need at least 750 watts.
That was my plan.
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Intel Core i5 2500k @ 3.3Ghz CPU / MSI P67A-G43 B3 Motherboard / G.Skill Sniper 8Gb (2 x 4Gb) RAM / MSI Radeon HD 6850 Cyclone PE/OC Graphics Card / XFX 80+ Bronze 650W Power Supply / Seagate Barracuda 500Gb 7200RPM Hard Drive / NZXT Gamma Classic Case
Though if you are willing to buy a new 750w PSU 5 months later, it may be better just to get a new GPU altogether, since that costs around $300. Single card > Dual Cards.
Maybe the 7850 will be down to a reasonable price by then, I doubt it though.
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Intel Core i5 2500k @ 3.3Ghz CPU / MSI P67A-G43 B3 Motherboard / G.Skill Sniper 8Gb (2 x 4Gb) RAM / MSI Radeon HD 6850 Cyclone PE/OC Graphics Card / XFX 80+ Bronze 650W Power Supply / Seagate Barracuda 500Gb 7200RPM Hard Drive / NZXT Gamma Classic Case
So a 750W would JUST be enough, or would it work well enough that it shouldn't screw up.
I want to make a reliable system that will last a long time with an upgrade every once and a while.
Eeeeeeeeeehhhhhhhhhhh 750 should be fine IF it's 80+ that is. I threw 800 in there because I prefer my PSU only working at 80% capacity and I love wiggle room for upgrades.
At full GPU load, the whole system consumes 393w of power. That is not including the cpu. Since you have a "k" cpu and are overclocking to 4ghz (really? you can get to atleast 4.5GHz on those) that will be say an additional 150 watts.
If you are going to overclock the 6850's, that would be an additional 50w or so (overestimate).
393w+150w+50w=593w
(This is an overestimate, as the article claims they are using a i7 965 3.75GHz, which consumes more power than a 2500k. (130w vs 95w at stock)
Any good quality 600w or decent 650w will be fine.
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Try my map named Survival Earth http://adf.ly/4APq1 VVVV My custom built rig:
A 700W would still be a good idea, because of the wiggle room.
Even if SavageClown does not upgrade, the PSU will stop being able to provide enough power as capacitors and such fade over time.
593W with a 600W PSU is cutting it close anyway, and an extra 100W of space with a 700W PSU would be nice to have.
I may just go to a 700W.
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Intel Core i5 2500k @ 3.3Ghz CPU / MSI P67A-G43 B3 Motherboard / G.Skill Sniper 8Gb (2 x 4Gb) RAM / MSI Radeon HD 6850 Cyclone PE/OC Graphics Card / XFX 80+ Bronze 650W Power Supply / Seagate Barracuda 500Gb 7200RPM Hard Drive / NZXT Gamma Classic Case
A 700W would still be a good idea, because of the wiggle room.
Even if SavageClown does not upgrade, the PSU will stop being able to provide enough power as capacitors and such fade over time.
593W with a 600W PSU is cutting it close anyway, and an extra 100W of space with a 700W PSU would be nice to have.
A good quality 600w from a good brand (antec,corsair,seasonic) could provide a bit more than 600w actually. For examply, I have an Antec Earthwatts Green 650w, which can provide about 713w before it shuts off.
I would get a quality 650w.
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Try my map named Survival Earth http://adf.ly/4APq1 VVVV My custom built rig:
That is the graphics card that is currently on the way to my home (With the rest of my computer). I have a 650W power supply and I was wondering. How much power would I need to CrossFire it with another one of those? My birthday is in 5 months and I'm planning on upgrading then.
For the rest of my specs: http://pcpartpicker.com/p/3ijw
I will be OC'ing the CPU to 4Ghz.
Thanks,
SavC
Says 500w total system power for a single card, so for two I would say 650-700w would be fine.
The card itself seems to use ~100-140w on it's own (slightly less since the secondary card won't be at 100%) so 650 might be cutting it slightly close while 700 would give you a lot of wiggle room.
I'll probably upgrade to a 750W when I upgrade just for safety. 2 OC'd cards and an OC'd CPU will probably kill a 650W.
That was my plan.
For two OC'd cards and an OC'd CPU I would definitely go 750-800w.
So a 750W would JUST be enough, or would it work well enough that it shouldn't screw up.
I want to make a reliable system that will last a long time with an upgrade every once and a while.
Maybe the 7850 will be down to a reasonable price by then, I doubt it though.
Eeeeeeeeeehhhhhhhhhhh 750 should be fine IF it's 80+ that is. I threw 800 in there because I prefer my PSU only working at 80% capacity and I love wiggle room for upgrades.
50/50 it honestly 100% would depend on how you use it, and what programs you end up getting into down the line.
Look at this website. http://www.guru3d.com/article/radeon-hd-6850-6870-crossfirex-review/4
At full GPU load, the whole system consumes 393w of power. That is not including the cpu. Since you have a "k" cpu and are overclocking to 4ghz (really? you can get to atleast 4.5GHz on those) that will be say an additional 150 watts.
If you are going to overclock the 6850's, that would be an additional 50w or so (overestimate).
393w+150w+50w=593w
(This is an overestimate, as the article claims they are using a i7 965 3.75GHz, which consumes more power than a 2500k. (130w vs 95w at stock)
Any good quality 600w or decent 650w will be fine.
I may just go to a 700W.
A good quality 600w from a good brand (antec,corsair,seasonic) could provide a bit more than 600w actually. For examply, I have an Antec Earthwatts Green 650w, which can provide about 713w before it shuts off.
I would get a quality 650w.