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GeForce GTX 960M vs Radeon HD 4790

Intro

The GeForce GTX 960M features core speeds of 1096 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Compare all of that to the Radeon HD 4790, which has a GPU core clock speed of 600 MHz, and 512 MB of GDDR5 memory set to run at 800 MHz through a 256-bit bus. It also is made up of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4790 will be 60% quicker than the GeForce GTX 960M in general, because of its greater data rate. (explain)

Radeon HD 4790 102400 MB/sec
GeForce GTX 960M 64000 MB/sec
Difference: 38400 (60%)

Texel Rate

The GeForce GTX 960M will be quite a bit (more or less 128%) better at texture filtering than the Radeon HD 4790. (explain)

GeForce GTX 960M 43840 Mtexels/sec
Radeon HD 4790 19200 Mtexels/sec
Difference: 24640 (128%)

Pixel Rate

The GeForce GTX 960M will be much (approximately 83%) more effective at AA than the Radeon HD 4790, and capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 960M 17536 Mpixels/sec
Radeon HD 4790 9600 Mpixels/sec
Difference: 7936 (83%)

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 960M

Amazon.com

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Radeon HD 4790

Amazon.com

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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 960M Radeon HD 4790
Manufacturer nVidia AMD
Year March 12 2015 2009
Code Name GM107 RV790
Memory 2048 MB 512 MB
Core Speed 1096 MHz 600 MHz
Memory Speed 4000 MHz 3200 MHz
Power (Max TDP) 65 watts (Unknown) watts
Bandwidth 64000 MB/sec 102400 MB/sec
Texel Rate 43840 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 17536 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 640 640(128x5)
Texture Mapping Units 40 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 959 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface 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 better the card's memory bandwidth, the faster 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 are applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 960M

Amazon.com

Check prices at:

Radeon HD 4790

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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