GeForce GTX 460 (OEM) vs Radeon HD 4650 1GB

Intro

Compare those specs to the Radeon HD 4650 1GB, which uses a 55 nm design. AMD has clocked the core speed at 600 MHz. The GDDR3 RAM is set to run at a frequency of 700 MHz on this specific model. It features 320(64x5) SPUs along with 32 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 95 Watts (173%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 (OEM) should be 386% faster than the Radeon HD 4650 1GB in general, due to its greater bandwidth. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 86400 (386%)

Texel Rate

The GeForce GTX 460 (OEM) will be much (about 90%) more effective at AF than the Radeon HD 4650 1GB. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 17200 (90%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 460 (OEM) is a better choice, by far. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 16000 (333%)

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 data (measured in megabytes per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that can be processed per second. This is worked out 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 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 can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.