GeForce GT 450 (OEM) vs Radeon HD 5770

Intro

The GeForce GT 450 (OEM) features a GPU core clock speed of 790 MHz, and the 1536 MB of GDDR5 memory is set to run at 1000 MHz through a 192-bit bus. It also is comprised of 144 SPUs, 24 TAUs, and 24 Raster Operation Units.

Compare those specifications to the Radeon HD 5770, which comes with core speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator 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 GT 450 (OEM) Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 5770 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GT 450 (OEM)	Radeon HD 5770
Manufacturer	nVidia	ATi
Year	October 2010	October 13, 2009
Code Name	GF106	Juniper XT
Fab Process	40 nm	40 nm
Bus	PCIe x16	PCIe 2.1 x16
Memory	1536 MB	1024 MB
Core Speed	790 MHz	850 MHz
Shader Speed	1580 MHz	(N/A) MHz
Memory Speed	1000 MHz	1200 MHz
Unified Shaders	144	800(160x5)
Texture Mapping Units	24	40
Render Output Units	24	16
Bus Type	GDDR5	GDDR5
Bus Width	192-bit	128-bit
DirectX Version	DirectX 11	DirectX 11
OpenGL Version	OpenGL 4.1	OpenGL 3.2
Power (Max TDP)	106 watts	108 watts
Shader Model	5.0	5.0
Bandwidth	96000 MB/sec	76800 MB/sec
Texel Rate	18960 Mtexels/sec	34000 Mtexels/sec
Pixel Rate	18960 Mpixels/sec	13600 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the 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 that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.