Geforce GTX 770 vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has clocked the core frequency at 723 MHz. The GDDR5 memory is set to run at a frequency of 1250 MHz on this card. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Geforce GTX 770		230 Watts
	Difference: 105 Watts (84%)

Memory Bandwidth

Theoretically, the Geforce GTX 770 should perform much faster than the Radeon R9 M395X in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 64384 (40%)

Texel Rate

The Geforce GTX 770 should be much (approximately 45%) more effective at AF than the Radeon R9 M395X. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 41344 (45%)

Pixel Rate

The Geforce GTX 770 is quite a bit (more or less 45%) better at AA than the Radeon R9 M395X, and will be capable of handling higher screen resolutions while still performing well. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 10336 (45%)

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 maximum amount of information (in units of MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.