GeForce GTX 560 Ti vs Radeon HD 4870 X2

Intro

The GeForce GTX 560 Ti comes with a clock frequency of 822 MHz and a GDDR5 memory frequency of 1002 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It is made up of 384 SPUs, 64 Texture Address Units, and 32 ROPs.

Compare those specs to the Radeon HD 4870 X2, which uses a 55 nm design. ATi has clocked the core frequency at 750 MHz. The GDDR5 memory works at a frequency of 900 MHz on this particular model. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce GTX 560 Ti Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 4870 X2 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 560 Ti	Radeon HD 4870 X2
Manufacturer	nVidia	ATi
Year	January 2011	Aug 12, 2008
Code Name	GF114	R700
Fab Process	40 nm	55 nm
Bus	PCIe x16	PCIe 2.0 x16 (PCIe bridge)
Memory	1024 MB	1024 MB (x2)
Core Speed	822 MHz	750 MHz (x2)
Shader Speed	1645 MHz	(N/A) MHz (x2)
Memory Speed	1002 MHz	900 MHz (x2)
Unified Shaders	384	800(160x5) (x2)
Texture Mapping Units	64	40 (x2)
Render Output Units	32	16 (x2)
Bus Type	GDDR5	GDDR5
Bus Width	256-bit	256-bit (x2)
DirectX Version	DirectX 11	DirectX 10.1
OpenGL Version	OpenGL 4.1	OpenGL 3.0
Power (Max TDP)	170 watts	350 watts
Shader Model	5.0	4.1
Bandwidth	128256 MB/sec	230400 MB/sec
Texel Rate	52608 Mtexels/sec	60000 Mtexels/sec
Pixel Rate	26304 Mpixels/sec	24000 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics 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 number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. 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 many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.