GeForce GTX 275 vs Radeon HD 5830

Intro

The GeForce GTX 275 comes with a GPU clock speed of 633 MHz, and the 896 MB of GDDR3 RAM is set to run at 1134 MHz through a 448-bit bus. It also features 240 Stream Processors, 80 TAUs, and 28 ROPs.

Compare all of that to the Radeon HD 5830, which features a clock speed of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It features 1120(224x5) SPUs, 56 Texture Address Units, 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.

GeForce GTX 275 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 5830 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 275	Radeon HD 5830
Manufacturer	nVidia	ATi
Year	April 9, 2009	February 25, 2010
Code Name	G200b	Cypress LE
Fab Process	55 nm	40 nm
Bus	PCIe x16 2.0	PCIe 2.1 x16
Memory	896 MB	1024 MB
Core Speed	633 MHz	800 MHz
Shader Speed	1404 MHz	(N/A) MHz
Memory Speed	1134 MHz	1000 MHz
Unified Shaders	240	1120(224x5)
Texture Mapping Units	80	56
Render Output Units	28	16
Bus Type	GDDR3	GDDR5
Bus Width	448-bit	256-bit
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.1	OpenGL 3.2
Power (Max TDP)	219 watts	175 watts
Shader Model	4.0	5.0
Bandwidth	127008 MB/sec	128000 MB/sec
Texel Rate	50640 Mtexels/sec	44800 Mtexels/sec
Pixel Rate	17724 Mpixels/sec	12800 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.