GeForce GTX 465 vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which makes use of a 40 nm design. AMD has set the core speed at 650 MHz. The DDR3 memory is set to run at a speed of 800 MHz on this specific card. It features 80(16x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 465		200 Watts
	Difference: 181 Watts (953%)

Memory Bandwidth

The GeForce GTX 465, in theory, should be much faster than the Radeon HD 5450 in general. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 89792 (702%)

Texel Rate

The GeForce GTX 465 will be quite a bit (more or less 414%) better at AF than the Radeon HD 5450. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 21508 (414%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 465 is the winner, by a large margin. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 16824 (647%)

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 maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.