GeForce GT 450 (OEM) vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which features a clock frequency of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It is comprised of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon HD 5770		108 Watts
	Difference: 2 Watts (2%)

Memory Bandwidth

The GeForce GT 450 (OEM), in theory, should perform a lot faster than the Radeon HD 5770 overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 19200 (25%)

Texel Rate

The Radeon HD 5770 will be a lot (more or less 79%) more effective at AF than the GeForce GT 450 (OEM). (explain)

Radeon HD 5770		34000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 15040 (79%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GT 450 (OEM) is a better choice, by far. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 5360 (39%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR 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 anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling 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 chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.