GeForce GTX 465 vs Radeon HD 4790

Intro

The GeForce GTX 465 comes with a GPU core clock speed of 607 MHz, and the 1024 MB of GDDR5 memory is set to run at 802 MHz through a 256-bit bus. It also features 352 Stream Processors, 44 TAUs, and 32 ROPs.

Compare all that to the Radeon HD 4790, which makes use of a 55 nm design. ATi has clocked the core speed at 600 MHz. The GDDR5 memory is set to run at a speed of 800 MHz on this card. It features 640(128x5) SPUs as well as 32 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 4790 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 465	Radeon HD 4790
Manufacturer	nVidia	ATi
Year	May 2010	2009
Code Name	GF100	RV790
Fab Process	40 nm	55 nm
Bus	PCIe x16	PCIe 2.0 x16
Memory	1024 MB	512 MB
Core Speed	607 MHz	600 MHz
Shader Speed	1215 MHz	(N/A) MHz
Memory Speed	802 MHz	800 MHz
Unified Shaders	352	640(128x5)
Texture Mapping Units	44	32
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	(N/A) watts
Shader Model	5.0	4.1
Bandwidth	102592 MB/sec	102400 MB/sec
Texel Rate	26708 Mtexels/sec	19200 Mtexels/sec
Pixel Rate	19424 Mpixels/sec	9600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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