GeForce GTX 465 vs Radeon R9 295X2

Intro

Compare that to the Radeon R9 295X2, which uses a 28 nm design. AMD has set the core speed at 1018 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this card. It features 2816 SPUs along with 176 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
Radeon R9 295X2		500 Watts
	Difference: 300 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 295X2 should perform quite a bit faster than the GeForce GTX 465 overall. (explain)

Radeon R9 295X2		640000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 537408 (524%)

Texel Rate

The Radeon R9 295X2 is much (about 1242%) faster with regards to texture filtering than the GeForce GTX 465. (explain)

Radeon R9 295X2		358336 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 331628 (1242%)

Pixel Rate

The Radeon R9 295X2 will be much (about 571%) faster with regards to FSAA than the GeForce GTX 465, and also able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 295X2		130304 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 110880 (571%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.