GeForce GTX 460 (OEM) vs Radeon HD 4750

Intro

Compare all that to the Radeon HD 4750, which uses a 40 nm design. AMD has clocked the core frequency at 730 MHz. The GDDR5 RAM is set to run at a frequency of 800 MHz on this model. It features 640(128x5) SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

Theoretically, the GeForce GTX 460 (OEM) should be quite a bit faster than the Radeon HD 4750 in general. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 57600 (113%)

Texel Rate

The GeForce GTX 460 (OEM) is a lot (about 56%) better at anisotropic filtering than the Radeon HD 4750. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 13040 (56%)

Pixel Rate

The GeForce GTX 460 (OEM) will be quite a bit (more or less 78%) faster with regards to full screen anti-aliasing than the Radeon HD 4750, and capable of handling higher resolutions more effectively. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 9120 (78%)

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 max amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.