GeForce GTX 965M vs Radeon R9 280X

Intro

Compare all that to the Radeon R9 280X, which has a GPU core clock speed of 850 MHz, and 3072 MB of GDDR5 memory running at 1500 MHz through a 384-bit bus. It also features 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 280X		8886 points
GeForce GTX 965M		5650 points
	Difference: 3236 (57%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
Radeon R9 280X		250 Watts
	Difference: 190 Watts (317%)

Memory Bandwidth

In theory, the Radeon R9 280X will be 350% faster than the GeForce GTX 965M in general, due to its greater bandwidth. (explain)

Radeon R9 280X		288000 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 224000 (350%)

Texel Rate

The Radeon R9 280X will be a lot (about 80%) faster with regards to AF than the GeForce GTX 965M. (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce GTX 965M		60416 Mtexels/sec
	Difference: 48384 (80%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 965M is the winner, but it probably won't make a huge difference. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon R9 280X		27200 Mpixels/sec
	Difference: 3008 (11%)

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

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.