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GeForce GTX 960 vs Radeon HD 4890 2GB

Intro

The GeForce GTX 960 features a clock frequency of 1127 MHz and a GDDR5 memory frequency of 1750 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Compare all that to the Radeon HD 4890 2GB, which comes with a clock speed of 1000 MHz and a GDDR5 memory frequency of 975 MHz. It also features a 256-bit bus, and makes use of a 55 nm design. It is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 960 120 Watts
Radeon HD 4890 2GB 190 Watts
Difference: 70 Watts (58%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4890 2GB will be 11% quicker than the GeForce GTX 960 in general, because of its greater data rate. (explain)

Radeon HD 4890 2GB 124800 MB/sec
GeForce GTX 960 112000 MB/sec
Difference: 12800 (11%)

Texel Rate

The GeForce GTX 960 should be much (approximately 80%) faster with regards to AF than the Radeon HD 4890 2GB. (explain)

GeForce GTX 960 72128 Mtexels/sec
Radeon HD 4890 2GB 40000 Mtexels/sec
Difference: 32128 (80%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 960 is the winner, by a large margin. (explain)

GeForce GTX 960 36064 Mpixels/sec
Radeon HD 4890 2GB 16000 Mpixels/sec
Difference: 20064 (125%)

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 4890 2GB

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 4890 2GB
Manufacturer nVidia AMD
Year January 2015 Apr 2, 2009
Code Name GM206 RV790 XT
Memory 2048 MB 2048 MB
Core Speed 1127 MHz 1000 MHz
Memory Speed 7000 MHz 3900 MHz
Power (Max TDP) 120 watts 190 watts
Bandwidth 112000 MB/sec 124800 MB/sec
Texel Rate 72128 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 36064 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 1024 800(160x5)
Texture Mapping Units 64 40
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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 960

Amazon.com

Check prices at:

Radeon HD 4890 2GB

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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