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GeForce GTX 880M vs Radeon R9 M265X

Intro

The GeForce GTX 880M has a GPU core clock speed of 954 MHz, and the 4096 MB of GDDR5 memory runs at 1000 MHz through a 256-bit bus. It also features 1536 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Compare those specifications to the Radeon R9 M265X, which features a core clock speed of 575 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 880M should perform quite a bit faster than the Radeon R9 M265X overall. (explain)

GeForce GTX 880M 128000 MB/sec
Radeon R9 M265X 72000 MB/sec
Difference: 56000 (78%)

Texel Rate

The GeForce GTX 880M is quite a bit (approximately 431%) better at anisotropic filtering than the Radeon R9 M265X. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon R9 M265X 23000 Mtexels/sec
Difference: 99112 (431%)

Pixel Rate

The GeForce GTX 880M will be a lot (about 232%) more effective at FSAA than the Radeon R9 M265X, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon R9 M265X 9200 Mpixels/sec
Difference: 21328 (232%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce GTX 880M

Amazon.com

Check prices at:

Radeon R9 M265X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 880M Radeon R9 M265X
Manufacturer nVidia AMD
Year March 12 2014 May 1 2014
Code Name GK104 Venus Pro
Memory 4096 MB 2048 MB
Core Speed 954 MHz 575 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 130 watts (Unknown) watts
Bandwidth 128000 MB/sec 72000 MB/sec
Texel Rate 122112 Mtexels/sec 23000 Mtexels/sec
Pixel Rate 30528 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 1536 640
Texture Mapping Units 128 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 11.2
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 880M

Amazon.com

Check prices at:

Radeon R9 M265X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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