Geforce GTX 770 vs Radeon R9 285

Intro

Compare all that to the Radeon R9 285, which comes with a clock frequency of 918 MHz and a GDDR5 memory speed of 1375 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1792 SPUs, 112 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 285		8500 points
Geforce GTX 770		7854 points
	Difference: 646 (8%)

Ethereum Mining Hash Rate

Radeon R9 285		18 Mh/s
Geforce GTX 770		14 Mh/s
	Difference: 4 (29%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285		190 Watts
Geforce GTX 770		230 Watts
	Difference: 40 Watts (21%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 770 should be 27% quicker than the Radeon R9 285 overall, due to its greater bandwidth. (explain)

Geforce GTX 770		224384 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 48384 (27%)

Texel Rate

The Geforce GTX 770 will be quite a bit (more or less 30%) faster with regards to anisotropic filtering than the Radeon R9 285. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 31072 (30%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Geforce GTX 770 is the winner, but not by far. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 4096 (14%)

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 information (in units of MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 can be applied in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics 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 video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount 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 is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.