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GeForce 810M vs Radeon HD 7990

Intro

The GeForce 810M has a clock speed of 738 MHz and a DDR3 memory frequency of 900 MHz. It also makes use of a 64-bit memory bus, and makes use of a 28 nm design. It is comprised of 48 SPUs, 8 TAUs, and 4 Raster Operation Units.

Compare those specs to the Radeon HD 7990, which has a GPU core clock speed of 950 MHz, and 3072 MB of GDDR5 RAM running at 1500 MHz through a 384-bit bus. It also is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M 15 Watts
Radeon HD 7990 375 Watts
Difference: 360 Watts (2400%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7990 should perform quite a bit faster than the GeForce 810M overall. (explain)

Radeon HD 7990 576000 MB/sec
GeForce 810M 14400 MB/sec
Difference: 561600 (3900%)

Texel Rate

The Radeon HD 7990 should be a lot (approximately 4019%) better at texture filtering than the GeForce 810M. (explain)

Radeon HD 7990 243200 Mtexels/sec
GeForce 810M 5904 Mtexels/sec
Difference: 237296 (4019%)

Pixel Rate

The Radeon HD 7990 is quite a bit (about 1960%) better at AA than the GeForce 810M, and also should be capable of handling higher resolutions better. (explain)

Radeon HD 7990 60800 Mpixels/sec
GeForce 810M 2952 Mpixels/sec
Difference: 57848 (1960%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce 810M

Amazon.com

Check prices at:

Radeon HD 7990

Amazon.com

Check prices at:

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 810M Radeon HD 7990
Manufacturer nVidia AMD
Year February 2014 April 2013
Code Name GF117 Malta
Memory 1024 MB 3072 MB (x2)
Core Speed 738 MHz 950 MHz (x2)
Memory Speed 1800 MHz 6000 MHz (x2)
Power (Max TDP) 15 watts 375 watts
Bandwidth 14400 MB/sec 576000 MB/sec
Texel Rate 5904 Mtexels/sec 243200 Mtexels/sec
Pixel Rate 2952 Mpixels/sec 60800 Mpixels/sec
Unified Shaders 48 2048 (x2)
Texture Mapping Units 8 128 (x2)
Render Output Units 4 32 (x2)
Bus Type DDR3 GDDR5
Bus Width 64-bit 384-bit (x2)
Fab Process 28 nm 28 nm
Transistors (Unknown) million 4313 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 11.1
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, 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 amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce 810M

Amazon.com

Check prices at:

Radeon HD 7990

Amazon.com

Check prices at:

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.

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