Geforce GTX 770 vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which has core speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2560 SPUs along with 160 TAUs and 64 ROPs.

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 390 8G		12733 points
Geforce GTX 770		7854 points
	Difference: 4879 (62%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
Geforce GTX 770		14 Mh/s
	Difference: 14 (100%)

Zcash Mining Hash Rate

Radeon R9 390 8G		326 Sol/s
Geforce GTX 770		70 Sol/s
	Difference: 256 (366%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Radeon R9 390 8G should be 71% faster than the Geforce GTX 770 overall, because of its higher bandwidth. (explain)

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

Texel Rate

The Radeon R9 390 8G should be just a bit (about 20%) better at anisotropic filtering than the Geforce GTX 770. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Geforce GTX 770		133888 Mtexels/sec
	Difference: 26112 (20%)

Pixel Rate

The Radeon R9 390 8G should be quite a bit (more or less 91%) more effective at FSAA than the Geforce GTX 770, and will be capable of handling higher resolutions while still performing well. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Geforce GTX 770		33472 Mpixels/sec
	Difference: 30528 (91%)

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 (in units of megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the 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 that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.