Radeon HD 4850 1GB vs Radeon HD 5750 512MB

Intro

The Radeon HD 4850 1GB makes use of a 55 nm design. ATi has set the core frequency at 625 MHz. The GDDR4 RAM runs at a frequency of 993 MHz on this model. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

Compare all that to the Radeon HD 5750 512MB, which has a clock frequency of 700 MHz and a GDDR5 memory speed of 1150 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It features 720(144x5) SPUs, 36 TAUs, and 16 Raster Operation Units.

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.

Radeon HD 4850 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 5750 512MB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	Radeon HD 4850 1GB	Radeon HD 5750 512MB
Manufacturer	ATi	ATi
Year	Jun 25, 2008	October 13, 2009
Code Name	RV770 PRO	Juniper LE
Fab Process	55 nm	40 nm
Bus	PCIe 2.0 x16	PCIe 2.1 x16
Memory	1024 MB	512 MB
Core Speed	625 MHz	700 MHz
Shader Speed	N/A MHz	(N/A) MHz
Memory Speed	993 MHz	1150 MHz
Unified Shaders	800(160x5)	720(144x5)
Texture Mapping Units	40	36
Render Output Units	16	16
Bus Type	GDDR4	GDDR5
Bus Width	256-bit	128-bit
DirectX Version	DirectX 10.1	DirectX 11
OpenGL Version	OpenGL 3.0	OpenGL 3.2
Power (Max TDP)	110 watts	86 watts
Shader Model	4.1	5.0
Bandwidth	63552 MB/sec	73600 MB/sec
Texel Rate	25000 Mtexels/sec	25200 Mtexels/sec
Pixel Rate	10000 Mpixels/sec	11200 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per 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 - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.