GeForce GTX 750 Ti vs Radeon HD 4870 512MB

Intro

Compare all of that to the Radeon HD 4870 512MB, which makes use of a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 memory is set to run at a frequency of 900 MHz on this particular model. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator 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

The Radeon HD 4870 512MB should theoretically perform much faster 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 (about 36%) better at anisotropic 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%) better at full screen anti-aliasing than the Radeon HD 4870 512MB, and also will be capable of handling higher screen 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 maximum amount of data (counted in MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units of the card by the core 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 a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.