GeForce GTS 250 1GB vs Radeon HD 5670

Intro

The GeForce GTS 250 1GB features a clock speed of 738 MHz and a GDDR3 memory speed of 1100 MHz. It also makes use of a 256-bit memory bus, and uses a 65/55 nm design. It is comprised of 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare all that to the Radeon HD 5670, which makes use of a 40 nm design. ATi has set the core frequency at 775 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this specific model. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 Rasterization Operator 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 GTS 250 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 5670 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTS 250 1GB	Radeon HD 5670
Manufacturer	nVidia	ATi
Year	March 3, 2009	January 14, 2010
Code Name	G92a/b	Redwood XT
Fab Process	65/55 nm	40 nm
Bus	PCIe x16 2.0	PCIe 2.1 x16
Memory	1024 MB	1024 MB
Core Speed	738 MHz	775 MHz
Shader Speed	1836 MHz	(N/A) MHz
Memory Speed	1100 MHz (2200 MHz effective)	1000 MHz (4000 MHz effective)
Unified Shaders	128	400(80x5)
Texture Mapping Units	64	20
Render Output Units	16	8
Bus Type	GDDR3	GDDR5
Bus Width	256-bit	128-bit
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.1	OpenGL 3.2
Power (Max TDP)	145 watts	61 watts
Shader Model	4.0	5.0
Bandwidth	70400 MB/sec	64000 MB/sec
Texel Rate	47232 Mtexels/sec	15500 Mtexels/sec
Pixel Rate	11808 Mpixels/sec	6200 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses 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 number of texture map elements (texels) that can be processed per second. This number is calculated 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.