GeForce GTX 465 vs Radeon R9 M375

Intro

Compare that to the Radeon R9 M375, which has GPU core speed of 1015 MHz, and 4096 MB of DDR3 RAM running at 1100 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 465 should in theory be a lot faster than the Radeon R9 M375 overall. (explain)

GeForce GTX 465		102592 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 67392 (191%)

Texel Rate

The Radeon R9 M375 is a lot (more or less 52%) faster with regards to anisotropic filtering than the GeForce GTX 465. (explain)

Radeon R9 M375		40600 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 13892 (52%)

Pixel Rate

The GeForce GTX 465 will be just a bit (approximately 20%) more effective at full screen anti-aliasing than the Radeon R9 M375, and also should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon R9 M375		16240 Mpixels/sec
	Difference: 3184 (20%)

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: Memory bandwidth is the max amount of information (in units of MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.