GeForce 8800 Ultra vs GeForce GTX 550 Ti

Intro

The GeForce 8800 Ultra comes with a GPU clock speed of 612 MHz, and the 768 MB of GDDR3 memory is set to run at 1080 MHz through a 384-bit bus. It also is comprised of 128 Stream Processors, 64 Texture Address Units, and 24 Raster Operation Units.

Compare all of that to the GeForce GTX 550 Ti, which features a clock speed of 900 MHz and a GDDR5 memory speed of 1026 MHz. It also uses a 192-bit bus, and makes use of a 40 nm design. It features 192 SPUs, 32 Texture Address Units, and 24 Raster Operation 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 8800 Ultra Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

GeForce GTX 550 Ti Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 8800 Ultra	GeForce GTX 550 Ti
Manufacturer	nVidia	nVidia
Year	May 2007	March 2011
Code Name	G80	GF116
Fab Process	90 nm	40 nm
Bus	PCIe x16	PCIe 2.1 x16
Memory	768 MB	1024 MB
Core Speed	612 MHz	900 MHz
Shader Speed	1500 MHz	1800 MHz
Memory Speed	1080 MHz	1026 MHz
Unified Shaders	128	192
Texture Mapping Units	64	32
Render Output Units	24	24
Bus Type	GDDR3	GDDR5
Bus Width	384-bit	192-bit
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.0	OpenGL 4.1
Power (Max TDP)	171 watts	116 watts
Shader Model	4.0	5.0
Bandwidth	103680 MB/sec	98496 MB/sec
Texel Rate	39168 Mtexels/sec	28800 Mtexels/sec
Pixel Rate	14688 Mpixels/sec	21600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 applied per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core 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 quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.