Geforce GTX 770 vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this model. It features 2048 SPUs along with 128 Texture Address Units 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

In theory, the Geforce GTX 770 is 40% quicker than the Radeon R9 M395X overall, due to its greater data rate. (explain)

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

Texel Rate

The Geforce GTX 770 should be quite a bit (approximately 45%) faster with regards to AF than the Radeon R9 M395X. (explain)

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

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 770 is superior to the Radeon R9 M395X, by far. (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: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.