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HI guys.

 

buying the R9 390 MSI edition and wondering which PSU is better. the RMi 650 or RMi 750. I do intend to overclock my GPU and CPU. using an intel 6600k for the CPU and wanting to reach about a 4.2GHz OC. would it be safer to go spend a bit more on the 750??

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750w for sure

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HI guys.

 

buying the R9 390 MSI edition and wondering which PSU is better. the RMi 650 or RMi 750. I do intend to overclock my GPU and CPU. using an intel 6600k for the CPU and wanting to reach about a 4.2GHz OC. would it be safer to go spend a bit more on the 750??

650W for a single card system or 850W for two. Also, the EVGA G2 is cheaper and about as good.

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Either go for the 650 or 850. 750W is too much for a single GPU system, but not really enough for a dual GPU system. 

 

650W is perfect for single GPU and 850w would be perfect for future Crossfire. 

power.png

750W not enough for two GPUs?

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power.png

750W not enough for two GPUs?

R9 390 x2 overclocked + overclocked CPU + everything else will probably push a 750w. Not saying it can't power it, but 850W allows for headroom. 

 

Also, that graph is for GTX 980, doesn't specify the clocks or CPU or other system components or what load it is under, it can hardly be used as a comparison. 

 

EDIT: Even at stock speeds, 2x 390s and a 6600K can theoretically use over 700W under load, so knock that up for overclocking and add in other system components and you're cutting it very close.

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Probably cutting it close for R9 390 crossfire with an overclock on the cpu and gpu's. The AMD cards use more power than Nvidia.

yeah, i know that, I posted that because he said "a dual GPU system" not specifically a "dual 390 system"

 

 

Yeah so?

He said not enough for "a dual GPU system" he said nothing about 390

learn to read

 

anyway my point was that you can do 4 GPUs in a system with less than 700W

 

R9 390 x2 overclocked + overclocked CPU + everything else will probably push a 750w. Not saying it can't power it, but 850W allows for headroom. 

 

Also, that graph is for GTX 980, doesn't specify the clocks or CPU or other system components or what load it is under, it can hardly be used as a comparison. 

 

EDIT: Even at stock speeds, 2x 390s and a 6600K can theoretically use over 700W under load, so knock that up for overclocking and add in other system components and you're cutting it very close.

 

instead of writing pointless arguments you can actually google it yourself and look at the website where they actually list all system specs

and usually "system power consumption" bechmarks are run on a 5930k or 5960x system, so its an overestimate for most people

i just posted that to prove that you CAN run more than a dual GPU system on 700W

 

91_777_amd-radeon-r9-390x-crossfire-4k.p

Not really, this is wall power, when you account for 92% efficiency that system is only drawing 700W

 

750W is enough for two 390s as long as they arent overclocked much

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Yeah so?

He said not enough for "a dual GPU system" he said nothing about 390

learn to read

 

anyway my point was that you can do 4 GPUs in a system with less than 700W

 

What's your point? I mean if he already has a 390 he's probably gonna dual-GPU that.

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yeah, i know that, I posted that because he said "a dual GPU system" not specifically a "dual 390x system"

 

Yeah so?

He said not enough for "a dual GPU system" he said nothing about 390

learn to read

 

anyway my point was that you can do 4 GPUs in a system with less than 700W

 

 

instead of writing pointless arguments you can actually google it yourself and look at the website where they actually list all system specs

and usually "system power consumption" bechmarks are run on a 5930k or 5960x system, so its an overestimate for most people

i just posted that to prove that you CAN run more than a dual GPU system on 700W

 

 

Not really, this is wall power, when you account for 92% efficiency that system is only drawing 700W

Way to be pedantic. Why would I be talking about all systems in general? If you want to talk about pointless arguments, there's a cracker right here.

 

EDIT: You also didn't specify what systems can be run on 750W with 4 GPUs, so should I correct you with graphs of dual R9 295X2 cards?

 

EDIT2: As a response to your "learn to read" comment to @Dan Castellaneta you should learn to read in context. 

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What's your point? I mean if he already has a 390 he's probably gonna dual-GPU that.

I'm not talking about OP's post I'm talking about Oshino's post.

and dual GPU is not a good solution anyway, its better to sell old cards and buy a more powerful single GPU anyway

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Way to be pedantic. Why would I be talking about all systems in general? If you want to talk about pointless arguments, there's a cracker right here.

750W is still enough...

but hey, you must always be right, so go ahead and say whatever you want anyway

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750W is still enough...

but hey, you must always be right, so go ahead and say whatever you want anyway

I never said it wasn't, I said it wasn't really enough, meaning that there's little headroom for overclocking and upgrades after that. I even said later that it can power it, but explained why it's not a good choice. So, I'm going to throw your "learn to read" comment back at you again. 

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