GeForce 9800 GTX+ vs Radeon HD 4730

Intro

The GeForce 9800 GTX+ features a core clock frequency of 738 MHz and a GDDR3 memory speed of 1100 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It is comprised of 128 SPUs, 64 TAUs, and 16 Raster Operation Units.

Compare all that to the Radeon HD 4730, which features a core clock speed of 700 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 128-bit bus, and makes use of a 55 nm design. It is made up of 640(128x5) SPUs, 32 Texture Address Units, and 8 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 9800 GTX+ Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 4730 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 9800 GTX+	Radeon HD 4730
Manufacturer	nVidia	ATi
Year	July 2008	Jun 8, 2009
Code Name	G92b	RV770/CE
Fab Process	55 nm	55 nm
Bus	PCIe x16 2.0	PCIe 2.0 x16
Memory	512 MB	512 MB
Core Speed	738 MHz	700 MHz
Shader Speed	1836 MHz	(N/A) MHz
Memory Speed	1100 MHz	900 MHz
Unified Shaders	128	640(128x5)
Texture Mapping Units	64	32
Render Output Units	16	8
Bus Type	GDDR3	GDDR5
Bus Width	256-bit	128-bit
DirectX Version	DirectX 10	DirectX 10.1
OpenGL Version	OpenGL 3.0	OpenGL 3.0
Power (Max TDP)	145 watts	140 watts
Shader Model	4.0	4.1
Bandwidth	70400 MB/sec	57600 MB/sec
Texel Rate	47232 Mtexels/sec	22400 Mtexels/sec
Pixel Rate	11808 Mpixels/sec	5600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 are processed per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated 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 is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.