GeForce GTX 650 Ti vs Radeon HD 4550 512MB

Intro

Compare that to the Radeon HD 4550 512MB, which has a clock frequency of 600 MHz and a GDDR3 memory frequency of 800 MHz. It also features a 64-bit bus, and makes use of a 55 nm design. It is made up 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 4550 512MB		25 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 85 Watts (340%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti will be 575% quicker than the Radeon HD 4550 512MB in general, because of its greater bandwidth. (explain)

GeForce GTX 650 Ti		86400 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 73600 (575%)

Texel Rate

The GeForce GTX 650 Ti will be quite a bit (about 1137%) more effective at texture filtering than the Radeon HD 4550 512MB. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 54592 (1137%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 650 Ti is a better choice, by a large margin. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 12448 (519%)

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 maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.