Geforce GTX 770 vs Radeon R9 390X 8G

Intro

Compare that to the Radeon R9 390X 8G, which makes use of a 28 nm design. AMD has clocked the core frequency at 1050 MHz. The GDDR5 RAM is set to run at a speed of 1500 MHz on this particular card. It features 2816 SPUs along with 176 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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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 390X 8G		13555 points
Geforce GTX 770		7854 points
	Difference: 5701 (73%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Geforce GTX 770		14 Mh/s
	Difference: 18 (129%)

Zcash Mining Hash Rate

Radeon R9 390X 8G		330 Sol/s
Geforce GTX 770		70 Sol/s
	Difference: 260 (371%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770		230 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 45 Watts (20%)

Memory Bandwidth

Theoretically, the Radeon R9 390X 8G should be quite a bit faster than the Geforce GTX 770 overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
Geforce GTX 770		224384 MB/sec
	Difference: 159616 (71%)

Texel Rate

The Radeon R9 390X 8G should be much (approximately 38%) faster with regards to texture filtering than the Geforce GTX 770. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Geforce GTX 770		133888 Mtexels/sec
	Difference: 50912 (38%)

Pixel Rate

The Radeon R9 390X 8G is much (about 101%) faster with regards to AA than the Geforce GTX 770, and also will be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Geforce GTX 770		33472 Mpixels/sec
	Difference: 33728 (101%)

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 data (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.