GeForce GTX 650 Ti vs Radeon HD 4650 512MB

Intro

Compare those specs to the Radeon HD 4650 512MB, which has GPU clock speed of 600 MHz, and 512 MB of DDR2 memory set to run at 500 MHz through a 128-bit bus. It also is made up of 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 512MB		55 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 55 Watts (100%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 Ti should perform quite a bit faster than the Radeon HD 4650 512MB overall. (explain)

GeForce GTX 650 Ti		86400 MB/sec
Radeon HD 4650 512MB		16000 MB/sec
	Difference: 70400 (440%)

Texel Rate

The GeForce GTX 650 Ti should be much (more or less 209%) better at AF than the Radeon HD 4650 512MB. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
Radeon HD 4650 512MB		19200 Mtexels/sec
	Difference: 40192 (209%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 650 Ti is the winner, by far. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
Radeon HD 4650 512MB		4800 Mpixels/sec
	Difference: 10048 (209%)

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 data (measured in megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

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