GeForce GTX 750 Ti vs Radeon HD 4870 512MB

Intro

Compare that to the Radeon HD 4870 512MB, which comes with a GPU core clock speed of 750 MHz, and 512 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
Radeon HD 4870 512MB		150 Watts
	Difference: 90 Watts (150%)

Memory Bandwidth

Performance-wise, the Radeon HD 4870 512MB should theoretically be much better than the GeForce GTX 750 Ti in general. (explain)

Radeon HD 4870 512MB		115200 MB/sec
GeForce GTX 750 Ti		86400 MB/sec
	Difference: 28800 (33%)

Texel Rate

The GeForce GTX 750 Ti is a lot (approximately 36%) faster with regards to texture filtering than the Radeon HD 4870 512MB. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
Radeon HD 4870 512MB		30000 Mtexels/sec
	Difference: 10800 (36%)

Pixel Rate

The GeForce GTX 750 Ti will be a lot (approximately 36%) more effective at AA than the Radeon HD 4870 512MB, and able to handle higher resolutions better. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
Radeon HD 4870 512MB		12000 Mpixels/sec
	Difference: 4320 (36%)

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 MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. 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 also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.