GeForce GTX 260 vs Radeon HD 6450 (OEM)

Intro

The GeForce GTX 260 has a core clock frequency of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also makes use of a 448-bit memory bus, and makes use of a 65 nm design. It features 192 SPUs, 64 Texture Address Units, and 28 Raster Operation Units.

Compare all that to the Radeon HD 6450 (OEM), which features GPU clock speed of 625 MHz, and 512 MB of GDDR3 RAM set to run at 800 MHz through a 64-bit bus. It also is comprised of 160 Stream Processors, 8 Texture Address Units, and 4 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 260 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 6450 (OEM) Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 260	Radeon HD 6450 (OEM)
Manufacturer	nVidia	ATi
Year	June 16, 2008	February 2011
Code Name	G200	Caicos
Fab Process	65 nm	40 nm
Bus	PCIe x16 2.0	PCIe 2.1 x16
Memory	896 MB	512 MB
Core Speed	576 MHz	625 MHz
Shader Speed	1242 MHz	(N/A) MHz
Memory Speed	999 MHz (1998 MHz effective)	800 MHz (1600 MHz effective)
Unified Shaders	192	160
Texture Mapping Units	64	8
Render Output Units	28	4
Bus Type	GDDR3	GDDR3
Bus Width	448-bit	64-bit
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.1	OpenGL 4.1
Power (Max TDP)	182 watts	31 watts
Shader Model	4.0	5.0
Bandwidth	111888 MB/sec	12800 MB/sec
Texel Rate	36864 Mtexels/sec	5000 Mtexels/sec
Pixel Rate	16128 Mpixels/sec	2500 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.