GeForce GTX 465 vs Radeon R9 M295X

Intro

Compare that to the Radeon R9 M295X, which makes use of a 28 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 RAM works at a speed of 1375 MHz on this particular card. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
GeForce GTX 465		200 Watts
	Difference: 75 Watts (60%)

Memory Bandwidth

The Radeon R9 M295X should theoretically perform a lot faster than the GeForce GTX 465 in general. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 73408 (72%)

Texel Rate

The Radeon R9 M295X is quite a bit (about 259%) more effective at texture filtering than the GeForce GTX 465. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 69292 (259%)

Pixel Rate

The Radeon R9 M295X will be a lot (approximately 24%) faster with regards to anti-aliasing than the GeForce GTX 465, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M295X		24000 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 4576 (24%)

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 (in units of MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.