GeForce GTX 465 vs Radeon HD 4870 X2

Intro

The GeForce GTX 465 features a GPU core speed of 607 MHz, and the 1024 MB of GDDR5 RAM runs at 802 MHz through a 256-bit bus. It also is made up of 352 Stream Processors, 44 Texture Address Units, and 32 ROPs.

Compare all of that to the Radeon HD 4870 X2, which uses a 55 nm design. ATi has clocked the core frequency at 750 MHz. The GDDR5 memory works at a speed of 900 MHz on this card. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 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 465 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 4870 X2 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 465	Radeon HD 4870 X2
Manufacturer	nVidia	ATi
Year	May 2010	Aug 12, 2008
Code Name	GF100	R700
Fab Process	40 nm	55 nm
Bus	PCIe x16	PCIe 2.0 x16 (PCIe bridge)
Memory	1024 MB	1024 MB (x2)
Core Speed	607 MHz	750 MHz (x2)
Shader Speed	1215 MHz	(N/A) MHz (x2)
Memory Speed	802 MHz	900 MHz (x2)
Unified Shaders	352	800(160x5) (x2)
Texture Mapping Units	44	40 (x2)
Render Output Units	32	16 (x2)
Bus Type	GDDR5	GDDR5
Bus Width	256-bit	256-bit (x2)
DirectX Version	DirectX 11	DirectX 10.1
OpenGL Version	OpenGL 4.1	OpenGL 3.0
Power (Max TDP)	200 watts	350 watts
Shader Model	5.0	4.1
Bandwidth	102592 MB/sec	230400 MB/sec
Texel Rate	26708 Mtexels/sec	60000 Mtexels/sec
Pixel Rate	19424 Mpixels/sec	24000 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units by the core 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.