GeForce GTX 750 vs Radeon HD 4850 512MB

Intro

Compare all of that to the Radeon HD 4850 512MB, which comes with a core clock speed of 625 MHz and a GDDR3 memory frequency of 993 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 4850 512MB		110 Watts
	Difference: 55 Watts (100%)

Memory Bandwidth

The GeForce GTX 750, in theory, should perform quite a bit faster than the Radeon HD 4850 512MB in general. (explain)

GeForce GTX 750		80000 MB/sec
Radeon HD 4850 512MB		63552 MB/sec
	Difference: 16448 (26%)

Texel Rate

The GeForce GTX 750 will be quite a bit (approximately 31%) faster with regards to anisotropic filtering than the Radeon HD 4850 512MB. (explain)

GeForce GTX 750		32640 Mtexels/sec
Radeon HD 4850 512MB		25000 Mtexels/sec
	Difference: 7640 (31%)

Pixel Rate

The GeForce GTX 750 is quite a bit (about 63%) faster with regards to full screen anti-aliasing than the Radeon HD 4850 512MB, and capable of handling higher resolutions better. (explain)

GeForce GTX 750		16320 Mpixels/sec
Radeon HD 4850 512MB		10000 Mpixels/sec
	Difference: 6320 (63%)

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 information (measured in megabytes per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.