GeForce GTX 465 vs Radeon HD 4550 256MB

Intro

Compare all that to the Radeon HD 4550 256MB, which comes with GPU clock speed of 600 MHz, and 256 MB of DDR3 RAM set to run at 800 MHz through a 64-bit bus. It also features 80(16x5) Stream Processors, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 256MB		25 Watts
GeForce GTX 465		200 Watts
	Difference: 175 Watts (700%)

Memory Bandwidth

The GeForce GTX 465, in theory, should perform a lot faster than the Radeon HD 4550 256MB overall. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 89792 (702%)

Texel Rate

The GeForce GTX 465 will be a lot (about 456%) more effective at texture filtering than the Radeon HD 4550 256MB. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 21908 (456%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 465 is the winner, by far. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 17024 (709%)

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 max amount of data (in units of megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high 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 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.