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GeForce GTX 560 Ti vs Radeon HD 4870 1GB

Intro

The GeForce GTX 560 Ti comes with core clock speeds of 822 MHz on the GPU, and 1002 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator Units.

Compare those specs to the Radeon HD 4870 1GB, which uses a 55 nm design. AMD has set the core speed at 750 MHz. The GDDR5 RAM works at a frequency of 900 MHz on this particular card. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 1GB 150 Watts
GeForce GTX 560 Ti 170 Watts
Difference: 20 Watts (13%)

Memory Bandwidth

Performance-wise, the GeForce GTX 560 Ti should in theory be a bit superior to the Radeon HD 4870 1GB overall. (explain)

GeForce GTX 560 Ti 128256 MB/sec
Radeon HD 4870 1GB 115200 MB/sec
Difference: 13056 (11%)

Texel Rate

The GeForce GTX 560 Ti is quite a bit (approximately 75%) more effective at texture filtering than the Radeon HD 4870 1GB. (explain)

GeForce GTX 560 Ti 52608 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 22608 (75%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 560 Ti is the winner, and very much so. (explain)

GeForce GTX 560 Ti 26304 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 14304 (119%)

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 Ti

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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 560 Ti Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year January 2011 Jun 25, 2008
Code Name GF114 RV770 XT
Memory 1024 MB 1024 MB
Core Speed 822 MHz 750 MHz
Memory Speed 4008 MHz 3600 MHz
Power (Max TDP) 170 watts 150 watts
Bandwidth 128256 MB/sec 115200 MB/sec
Texel Rate 52608 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 26304 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 384 800(160x5)
Texture Mapping Units 64 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 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 max amount of information (counted in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 560 Ti

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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.

Comments

2 Responses to “GeForce GTX 560 Ti vs Radeon HD 4870 1GB”
Giaky says:

Is better Gtx 560 Ti , HD 6950 or HD 4870 X2?? Can you help me please?

admin says:

I got a HD 6950 2GB, but it looks like the 560Ti isn't far behind. The 4870 X2 should be a reasonable amount faster, but I don't have any actual benchmarks to back that up. It uses a LOT more power though. Personally I wouldn't go for a dual GPU card, the extra power usage and hassle isn't worth it to me. So it's between the 560Ti and the 6950... well, you know which one I got, but it looks like the 560 is a little bit faster in certain games and also uses less power.

http://www.hwcompare.com/8888/geforce-gtx-560-ti-vs-radeon-hd-6950-2gb/

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