GeForce GTX 660 Ti vs Radeon HD 4730

Intro

Compare those specs to the Radeon HD 4730, which uses a 55 nm design. AMD has clocked the core frequency at 700 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this card. It features 640(128x5) SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4730		140 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 10 Watts (7%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti should perform a lot faster than the Radeon HD 4730 in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 86400 (150%)

Texel Rate

The GeForce GTX 660 Ti should be quite a bit (about 358%) more effective at texture filtering than the Radeon HD 4730. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 80080 (358%)

Pixel Rate

The GeForce GTX 660 Ti will be much (more or less 292%) better at full screen anti-aliasing than the Radeon HD 4730, and will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 16360 (292%)

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 megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.