Geforce GTX 770 vs Radeon R9 M265X

Intro

Compare all of that to the Radeon R9 M265X, which has a clock speed of 575 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Geforce GTX 770 should be quite a bit faster than the Radeon R9 M265X in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 152384 (212%)

Texel Rate

The Geforce GTX 770 should be quite a bit (more or less 482%) more effective at AF than the Radeon R9 M265X. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 110888 (482%)

Pixel Rate

If running with high levels of AA is important to you, then the Geforce GTX 770 is superior to the Radeon R9 M265X, by far. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 24272 (264%)

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 largest amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 applied per second. This is worked out by multiplying the total texture units of the card by the core clock 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 in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 memory bandwidth is, the lower the ability to get to the max fill rate.