Geforce GTX 770 vs Radeon R9 390X 8G

Intro

Compare that to the Radeon R9 390X 8G, which uses a 28 nm design. AMD has set the core speed at 1050 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this particular model. It features 2816 SPUs as well as 176 TAUs 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

In theory, the Radeon R9 390X 8G should be much 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 will be a lot (more or less 38%) better at anisotropic 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 a lot (approximately 101%) better at FSAA than the Geforce GTX 770, and also should be able to handle higher resolutions without slowing down too much. (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: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.