AMD Radeon R7 265 2GB Video Card Review with Sapphire Dual-X R7 265

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Dual Monitor Power Consumption

One of the things that we noticed with the some of the current AMD Radeon graphics card is that they aren’t as power efficient as NVIDIA GeForce cards when it comes to multi-monitor setups. This is something we don’t often touch on in all of our video card reviews, but it is worth a mention in launch articles like this one for the AMD Radeon R7 265.


In the GPU-Z screen shots above we have the Sapphire Dual-X R7 265 2GB OC w/ BOOST running with one monitor on the left and two monitors on the right. Yes, Just hooking up the second monitor will cause the power draw to go up and many people don’t fully understand this. Having to push pixels and manage the clocks of two displays does put more strain on the GPU and NVIDIA increased the core and memory clock speeds to do this. You also need more voltage an an idle state to run the higher clock speeds and the means more heat and sometimes higher fan speeds. You can clearly see that the GPU idle temperature went up by 11C and the fan speed went up 1% as a result of hooking up a second display to the video card.

  GTX 650 Ti GTX 650 Ti R7 260X R7 260X R7 265 R7 265
# of Displays 1 2 1 2 1 2
Core Clock  324.0 MHz 324.0 MHz 300.0 MHz 300.0 MHz 300.0 MHz 400.0 MHz
Mem Clock 162.0MHz 162.0MHz 150.0 MHz 1625.0 MHz 150.0 MHz 1400.0 MHz
Idle Temp  29C 30C 25C 34C 26C 37C
Idle Power 112W 115W 112W 132W 113W 139W
Fan Speed 30% 30% 20% 20%  20% 21%
Fan Noise 43.1 dB 43.1 dB 38.6 dB 38.8 dB 38.7 dB 38.8 dB

The AMD Radeon R7 260X and the Radeon R7 265 that we used in this review both show significant power increases with a second monitor hooked up.  The AMD Radeon R7 260X jumped up 20 Watts and the AMD Radeon R7 265 2GB increased by 26 Watts. These GPUs both use different slightly different GPU cores (Bonaire and Pitcarin), but you can see that AMD’s Graphics Core Next (GCN) architecture isn’t as multi-monitor friendly as what NVIDIA was able to do with their Kepler GPUs.


Here are the GPU-Z shots for the NVIDIA GeForce GTX 650 Ti 2GB BOOST reference card that shows one monitor on the left and two monitors on the right. As you can see the NVIDIA GeForce GTX 650 Ti clock speeds, voltage and fan speeds all don’t change when a second monitor is hooked up. The only change is roughly a 5% increase in the memory controller load and about a 1% higher TDP (power consumption) as a result of the higher memory controller load. So, there was a 1C increase in temperature and a 3W increase in power consumption due to this, which is minor compared to the 20W or higher difference seen on comparable cards from AMD.

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  • peeter

    what power supplie did you use ?

  • Will a 430W PSU be enough to run an R7 265 and an FX-6300 @4Ghz ?

    • Lutscher22

      Try the enermax Psu calculator… it says yes

  • Pat

    im intersted in this card, and am hoping you ppl can shed some light for me , i just built a new system for gaming last monht , nothing major no sli , i only have a hdtv for my main gaming screen , i am looking to get a new GPU , its been years since i built a desktop , im looking at this card vs the GTX 750 , i want to stay under 250$ for a gpu , do you think this card will get a bios flash to revert it back to the R9 270 ? i have done alot of flashing but never a gpu , all kinds of diffrent things, and if that becomes or has become possible it would seal the deal for me , it looks like this card has been out 1-1.5-2 months , has the price gone stupid ? i am not looking to mine i am looking to run games at high to ultra settings ,

  • Zuck

    This card can go as higher as hd 7850 on clock settings? some hd 7850 can get 1300mhz on core

  • steakandeggs

    where they are in stock, 7850s are selling for $200 or more. Retailers will not be selling mostof their 265s at $150, it’s throwing money away, they will sell out of them at $200. Sure you’ll see a few sold at that $150, people will go on the various retailers sites and say this card is awesome at $150 but most people will pay way more just like they pay $200 for the 7850.

  • Jamie Oliver

    a little of proof read goes a long way. It’s PITCAIRN not PITCARIN.

  • Harley J.

    Not sure if this is a rant at something or an review *reading first page*

    • Nathan Kirsch

      Just a little background. I figured it was worth noting as the card I was reviewing was basically a re-flashed 270.

      • Brandon Janeak

        So do you think it could potential be flashed back?

  • flogtr

    Does OCZ StealthXStream II 400W can handle this card in combination with the Intel Core i3 4130? If it consumes 282W with high-end Core i7 4960X, then with Core i3 4130 it will be something about 210W. So it’s safe to assume that PSU mentioned above will be OK?

    • Maxw3ll

      Obviouslly is enought.

    • Nathan Kirsch

      Unless you have a million storage drives and stuff in the system a 400W power supply should do the trick! The Intel Core i3 4130 is a 54W TDP processor, which is much less than the 130W TDP Intel Core i7-4960X processor that I am using.

    • flogtr

      Thanks guys. I’m building a very simple and “lightweight” PC. I think I can even try Core i5-4440, because apart of tiny h81 mobo, graphics card (r7 265) and LCD 19″ monitor, I will have 5400 rpm SATA HDD, mouse & keyboard and… well… that’s all.

    • BillyJ

      It is, don’t worry.

      Good card or the money, so good choice man.

      Too bad they didn’t include a Mantle run for the BF4 test, with a 6-core i7 gains should be 10% or lower. But with you CPU they should be much greater.

    • Pontiaku

      OCZ is bankrupt. The stockholders sued them last year for improper book keeping. That means no more warranties. Get a 520w seasonic, it’s only 59.99 on newegg.