GeForce GTX 750 vs Radeon HD 4850 1GB

Intro

Compare all that to the Radeon HD 4850 1GB, which features core clock speeds of 625 MHz on the GPU, and 993 MHz on the 1024 MB of GDDR4 RAM. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 4850 1GB		110 Watts
	Difference: 55 Watts (100%)

Memory Bandwidth

The GeForce GTX 750 should in theory be quite a bit faster than the Radeon HD 4850 1GB overall. (explain)

GeForce GTX 750		80000 MB/sec
Radeon HD 4850 1GB		63552 MB/sec
	Difference: 16448 (26%)

Texel Rate

The GeForce GTX 750 should be a lot (more or less 31%) faster with regards to anisotropic filtering than the Radeon HD 4850 1GB. (explain)

GeForce GTX 750		32640 Mtexels/sec
Radeon HD 4850 1GB		25000 Mtexels/sec
	Difference: 7640 (31%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 750 is a better choice, by far. (explain)

GeForce GTX 750		16320 Mpixels/sec
Radeon HD 4850 1GB		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: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.