GeForce 8800 GTX vs GeForce GT 450 (OEM)

Intro

The GeForce 8800 GTX uses a 90 nm design. nVidia has clocked the core speed at 575 MHz. The GDDR3 memory works at a frequency of 900 MHz on this specific model. It features 128 SPUs along with 64 TAUs and 24 Rasterization Operator Units.

Compare those specs to the GeForce GT 450 (OEM), which features clock speeds of 790 MHz on the GPU, and 1000 MHz on the 1536 MB of GDDR5 memory. It features 144 SPUs along with 24 TAUs and 24 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 8800 GTX Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

GeForce GT 450 (OEM) Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 8800 GTX	GeForce GT 450 (OEM)
Manufacturer	nVidia	nVidia
Year	Nov 2006	October 2010
Code Name	G80	GF106
Fab Process	90 nm	40 nm
Bus	PCIe x16	PCIe x16
Memory	768 MB	1536 MB
Core Speed	575 MHz	790 MHz
Shader Speed	1350 MHz	1580 MHz
Memory Speed	900 MHz	1000 MHz
Unified Shaders	128	144
Texture Mapping Units	64	24
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)	155 watts	106 watts
Shader Model	4.0	5.0
Bandwidth	86400 MB/sec	96000 MB/sec
Texel Rate	36800 Mtexels/sec	18960 Mtexels/sec
Pixel Rate	13800 Mpixels/sec	18960 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends 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.