GeForce GTX 650 Ti vs Radeon HD 4750

Intro

Compare those specifications to the Radeon HD 4750, which features GPU clock speed of 730 MHz, and 512 MB of GDDR5 RAM running at 800 MHz through a 128-bit bus. It also is comprised of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 35 Watts (47%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 Ti should be a lot faster than the Radeon HD 4750 overall. (explain)

GeForce GTX 650 Ti		86400 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 35200 (69%)

Texel Rate

The GeForce GTX 650 Ti will be a lot (about 154%) more effective at AF than the Radeon HD 4750. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 36032 (154%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 650 Ti is a better choice, by far. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 3168 (27%)

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 largest amount of data (counted in megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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