Compare any two graphics cards:

Radeon HD 5870 vs Radeon HD 6570 (OEM) 2GB

Intro

The Radeon HD 5870 comes with a GPU clock speed of 850 MHz, and the 1024 MB of GDDR5 RAM runs at 1200 MHz through a 256-bit bus. It also is made up of 1600(320x5) Stream Processors, 80 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 6570 (OEM) 2GB, which comes with a clock speed of 650 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is comprised of 480 SPUs, 24 TAUs, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB		50 Watts
Radeon HD 5870		188 Watts
	Difference: 138 Watts (276%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5870 should in theory be a lot superior to the Radeon HD 6570 (OEM) 2GB in general. (explain)

Radeon HD 5870		153600 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 89600 (140%)

Texel Rate

The Radeon HD 5870 should be much (approximately 336%) more effective at AF than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon HD 5870		68000 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 52400 (336%)

Pixel Rate

The Radeon HD 5870 should be much (approximately 423%) better at anti-aliasing than the Radeon HD 6570 (OEM) 2GB, and also capable of handling higher screen resolutions better. (explain)

Radeon HD 5870		27200 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 22000 (423%)

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

Display Prices

Hide Prices

Radeon HD 5870

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 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

Display Specifications

Hide Specifications

Model	Radeon HD 5870	Radeon HD 6570 (OEM) 2GB
Manufacturer	AMD	AMD
Year	September 23, 2009	February 2011
Code Name	Cypress XT	Turks
Memory	1024 MB	1024 MB
Core Speed	850 MHz	650 MHz
Memory Speed	4800 MHz	4000 MHz
Power (Max TDP)	188 watts	50 watts
Bandwidth	153600 MB/sec	64000 MB/sec
Texel Rate	68000 Mtexels/sec	15600 Mtexels/sec
Pixel Rate	27200 Mpixels/sec	5200 Mpixels/sec
Unified Shaders	1600(320x5)	480
Texture Mapping Units	80	24
Render Output Units	32	8
Bus Type	GDDR5	GDDR5
Bus Width	256-bit	128-bit
Fab Process	40 nm	40 nm
Transistors	2154 million	715 million
Bus	PCIe 2.1 x16	PCIe 2.1 x16
DirectX Version	DirectX 11	DirectX 11
OpenGL Version	OpenGL 3.2	OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a 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 number is worked out by multiplying the number of colour ROPs 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 output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices