GeForce GTX 465 vs Radeon HD 4870 1GB

Intro

The GeForce GTX 465 has core clock speeds of 607 MHz on the GPU, and 802 MHz on the 1024 MB of GDDR5 RAM. It features 352 SPUs as well as 44 Texture Address Units and 32 Rasterization Operator Units.

Compare all that to the Radeon HD 4870 1GB, which has clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs along with 40 TAUs and 16 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 GTX 465 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 4870 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 465	Radeon HD 4870 1GB
Manufacturer	nVidia	ATi
Year	May 2010	Jun 25, 2008
Code Name	GF100	RV770 XT
Fab Process	40 nm	55 nm
Bus	PCIe x16	PCIe 2.0 x16
Memory	1024 MB	1024 MB
Core Speed	607 MHz	750 MHz
Shader Speed	1215 MHz	(N/A) MHz
Memory Speed	802 MHz	900 MHz
Unified Shaders	352	800(160x5)
Texture Mapping Units	44	40
Render Output Units	32	16
Bus Type	GDDR5	GDDR5
Bus Width	256-bit	256-bit
DirectX Version	DirectX 11	DirectX 10.1
OpenGL Version	OpenGL 4.1	OpenGL 3.0
Power (Max TDP)	200 watts	150 watts
Shader Model	5.0	4.1
Bandwidth	102592 MB/sec	115200 MB/sec
Texel Rate	26708 Mtexels/sec	30000 Mtexels/sec
Pixel Rate	19424 Mpixels/sec	12000 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.