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GeForce GTX 560 vs Radeon HD 4870 2GB

Intro

The GeForce GTX 560 comes with core clock speeds of 810 MHz on the GPU, and 1001 MHz on the 1024 MB of GDDR5 memory. It features 336 SPUs as well as 56 TAUs and 32 ROPs.

Compare that to the Radeon HD 4870 2GB, which makes use of a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 memory works at a frequency of 900 MHz on this specific model. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 will be 11% quicker than the Radeon HD 4870 2GB overall, due to its greater data rate. (explain)

GeForce GTX 560 128128 MB/sec
Radeon HD 4870 2GB 115200 MB/sec
Difference: 12928 (11%)

Texel Rate

The GeForce GTX 560 will be quite a bit (about 51%) better at anisotropic filtering than the Radeon HD 4870 2GB. (explain)

GeForce GTX 560 45360 Mtexels/sec
Radeon HD 4870 2GB 30000 Mtexels/sec
Difference: 15360 (51%)

Pixel Rate

The GeForce GTX 560 is a lot (approximately 116%) more effective at AA than the Radeon HD 4870 2GB, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 560 25920 Mpixels/sec
Radeon HD 4870 2GB 12000 Mpixels/sec
Difference: 13920 (116%)

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 560

Amazon.com

Check prices at:

Radeon HD 4870 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 560 Radeon HD 4870 2GB
Manufacturer nVidia AMD
Year May 2011 Jun 25, 2008
Code Name GF114 RV770 XT
Memory 1024 MB 2048 MB
Core Speed 810 MHz 750 MHz
Memory Speed 4004 MHz 3600 MHz
Power (Max TDP) 150 watts 150 watts
Bandwidth 128128 MB/sec 115200 MB/sec
Texel Rate 45360 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 336 800(160x5)
Texture Mapping Units 56 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 956 million
Bus PCIe 2.0 x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, 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 amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 560

Amazon.com

Check prices at:

Radeon HD 4870 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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