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GeForce GTX 1070 vs Radeon HD 7950 3GB

Intro

The GeForce GTX 1070 features a clock frequency of 1506 MHz and a GDDR5 memory frequency of 2000 MHz. It also uses a 256-bit bus, and uses a 16 nm design. It features 1920 SPUs, 120 Texture Address Units, and 64 ROPs.

Compare all that to the Radeon HD 7950 3GB, which has core speeds of 800 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

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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.

Zcash Mining Hash Rate

GeForce GTX 1070		436 Sol/s
Radeon HD 7950 3GB		229 Sol/s
	Difference: 207 (90%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1070		150 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 50 Watts (33%)

Memory Bandwidth

The GeForce GTX 1070 should in theory be a small bit faster than the Radeon HD 7950 3GB in general. (explain)

GeForce GTX 1070		262144 MB/sec
Radeon HD 7950 3GB		240000 MB/sec
	Difference: 22144 (9%)

Texel Rate

The GeForce GTX 1070 will be a lot (more or less 102%) more effective at anisotropic filtering than the Radeon HD 7950 3GB. (explain)

GeForce GTX 1070		180720 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 91120 (102%)

Pixel Rate

The GeForce GTX 1070 is quite a bit (approximately 277%) faster with regards to full screen anti-aliasing than the Radeon HD 7950 3GB, and should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 1070		96384 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 70784 (277%)

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

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GeForce GTX 1070

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Radeon HD 7950 3GB

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model	GeForce GTX 1070	Radeon HD 7950 3GB
Manufacturer	nVidia	AMD
Year	June 2016	January 2012
Code Name	GP104-200	Tahiti Pro
Memory	8192 MB	3072 MB
Core Speed	1506 MHz	800 MHz
Memory Speed	8000 MHz	5000 MHz
Power (Max TDP)	150 watts	200 watts
Bandwidth	262144 MB/sec	240000 MB/sec
Texel Rate	180720 Mtexels/sec	89600 Mtexels/sec
Pixel Rate	96384 Mpixels/sec	25600 Mpixels/sec
Unified Shaders	1920	1792
Texture Mapping Units	120	112
Render Output Units	64	32
Bus Type	GDDR5	GDDR5
Bus Width	256-bit	384-bit
Fab Process	16 nm	28 nm
Transistors	7200 million	4313 million
Bus	PCIe 3.0 x16	PCIe 3.0 x16
DirectX Version	DirectX 12.0	DirectX 11.1
OpenGL Version	OpenGL 4.5	OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

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