Geforce GTX 690 vs Radeon R9 M265X

Intro

Compare all that to the Radeon R9 M265X, which features a GPU core clock speed of 575 MHz, and 2048 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Geforce GTX 690 should theoretically be a lot faster than the Radeon R9 M265X in general. (explain)

Geforce GTX 690		384512 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 312512 (434%)

Texel Rate

The Geforce GTX 690 will be quite a bit (about 918%) more effective at anisotropic filtering than the Radeon R9 M265X. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 211240 (918%)

Pixel Rate

The Geforce GTX 690 will be much (more or less 537%) more effective at FSAA than the Radeon R9 M265X, and will be capable of handling higher resolutions better. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 49360 (537%)

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: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.