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Geforce GTX 1080 Ti vs Radeon RX Vega 64

Intro

The Geforce GTX 1080 Ti has clock speeds of 1480 MHz on the GPU, and 1376 MHz on the 11264 MB of GDDR5X RAM. It features 3584 SPUs along with 224 Texture Address Units and 88 Rasterization Operator Units.

Compare that to the Radeon RX Vega 64, which features a clock speed of 1247 MHz and a HBM2 memory speed of 1890 MHz. It also makes use of a 2048-bit bus, and uses a 14 nm design. It features 4096 SPUs, 256 Texture Address Units, and 64 ROPs.

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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

Geforce GTX 1080 Ti		27629 points
Radeon RX Vega 64		21986 points
	Difference: 5643 (26%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 1080 Ti		250 Watts
Radeon RX Vega 64		295 Watts
	Difference: 45 Watts (18%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 1080 Ti should in theory be just a bit superior to the Radeon RX Vega 64 overall. (explain)

Geforce GTX 1080 Ti		495616 MB/sec
Radeon RX Vega 64		495411 MB/sec
	Difference: 205 (0%)

Texel Rate

The Geforce GTX 1080 Ti should be a little bit (more or less 4%) better at anisotropic filtering than the Radeon RX Vega 64. (explain)

Geforce GTX 1080 Ti		331520 Mtexels/sec
Radeon RX Vega 64		319232 Mtexels/sec
	Difference: 12288 (4%)

Pixel Rate

The Geforce GTX 1080 Ti will be much (about 63%) more effective at FSAA than the Radeon RX Vega 64, and will be able to handle higher resolutions better. (explain)

Geforce GTX 1080 Ti		130240 Mpixels/sec
Radeon RX Vega 64		79808 Mpixels/sec
	Difference: 50432 (63%)

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 1080 Ti

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Radeon RX Vega 64

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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 1080 Ti	Radeon RX Vega 64
Manufacturer	nVidia	AMD
Year	March 2017	August 2017
Code Name	GP102	Vega 10 XT
Memory	11264 MB	8192 MB
Core Speed	1480 MHz	1247 MHz
Memory Speed	11008 MHz	1890 MHz
Power (Max TDP)	250 watts	295 watts
Bandwidth	495616 MB/sec	495411 MB/sec
Texel Rate	331520 Mtexels/sec	319232 Mtexels/sec
Pixel Rate	130240 Mpixels/sec	79808 Mpixels/sec
Unified Shaders	3584	4096
Texture Mapping Units	224	256
Render Output Units	88	64
Bus Type	GDDR5X	HBM2
Bus Width	352-bit	2048-bit
Fab Process	16 nm	14 nm
Transistors	12000 million	12500 million
Bus	PCIe 3.0 x16	PCIe 3.0 x16
DirectX Version	DirectX 12.0	DirectX 12.0
OpenGL Version	OpenGL 4.5	OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

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