GeForce GTX 465 vs Radeon HD 5450

Intro

Compare all that to the Radeon HD 5450, which has a core clock frequency of 650 MHz and a DDR3 memory speed of 800 MHz. It also makes use of a 64-bit bus, and makes use of a 40 nm design. It is comprised of 80(16x5) SPUs, 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

Theoretically speaking, the GeForce GTX 465 should perform quite a bit 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 a lot (more or less 414%) better at texture filtering 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 a better choice, and very much so. (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: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 processed in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.