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GeForce GTX 960 vs Radeon HD 4790

Intro

The GeForce GTX 960 comes with a core clock frequency of 1127 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is made up of 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Compare all that to the Radeon HD 4790, which makes use of a 55 nm design. AMD has set the core frequency at 600 MHz. The GDDR5 memory runs at a speed of 800 MHz on this specific model. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 960 should theoretically be a little bit superior to the Radeon HD 4790 overall. (explain)

GeForce GTX 960 112000 MB/sec
Radeon HD 4790 102400 MB/sec
Difference: 9600 (9%)

Texel Rate

The GeForce GTX 960 should be much (approximately 276%) better at AF than the Radeon HD 4790. (explain)

GeForce GTX 960 72128 Mtexels/sec
Radeon HD 4790 19200 Mtexels/sec
Difference: 52928 (276%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 960 is superior to the Radeon HD 4790, and very much so. (explain)

GeForce GTX 960 36064 Mpixels/sec
Radeon HD 4790 9600 Mpixels/sec
Difference: 26464 (276%)

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 960

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.

Specifications

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Model GeForce GTX 960 Radeon HD 4790
Manufacturer nVidia AMD
Year January 2015 2009
Code Name GM206 RV790
Memory 2048 MB 512 MB
Core Speed 1127 MHz 600 MHz
Memory Speed 7000 MHz 3200 MHz
Power (Max TDP) 120 watts (Unknown) watts
Bandwidth 112000 MB/sec 102400 MB/sec
Texel Rate 72128 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 36064 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 1024 640(128x5)
Texture Mapping Units 64 32
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors 2940 million 959 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 12.0 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

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 calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 960

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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