GeForce 9800 GT 1GB vs GeForce 9800 GTX

Intro

The GeForce 9800 GT 1GB comes with a core clock frequency of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also features a 256-bit memory bus, and uses a 65/55 nm design. It is comprised of 112 SPUs, 56 TAUs, and 16 Raster Operation Units.

Compare that to the GeForce 9800 GTX, which has core clock speeds of 675 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 memory. It features 128 SPUs as well as 64 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 9800 GT 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

GeForce 9800 GTX Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 9800 GT 1GB	GeForce 9800 GTX
Manufacturer	nVidia	nVidia
Year	July 2008	April 2008
Code Name	G92a/b	G92
Fab Process	65/55 nm	65 nm
Bus	PCIe x16 2.0	PCIe x16 2.0
Memory	1024 MB	512 MB
Core Speed	600 MHz	675 MHz
Shader Speed	1500 MHz	1688 MHz
Memory Speed	900 MHz	1100 MHz
Unified Shaders	112	128
Texture Mapping Units	56	64
Render Output Units	16	16
Bus Type	GDDR3	GDDR3
Bus Width	256-bit	256-bit
DirectX Version	DirectX 10	DirectX 10
OpenGL Version	OpenGL 3.0	OpenGL 3.0
Power (Max TDP)	105 watts	140 watts
Shader Model	4.0	4.0
Bandwidth	57600 MB/sec	70400 MB/sec
Texel Rate	33600 Mtexels/sec	43200 Mtexels/sec
Pixel Rate	9600 Mpixels/sec	10800 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.