GeForce GTX 470 vs Radeon HD 4650 1GB

Intro

Compare those specs to the Radeon HD 4650 1GB, which makes use of a 55 nm design. AMD has clocked the core frequency at 600 MHz. The GDDR3 RAM is set to run at a speed of 700 MHz on this particular card. 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 470		215 Watts
	Difference: 160 Watts (291%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 470 should be 498% quicker than the Radeon HD 4650 1GB overall, because of its higher bandwidth. (explain)

GeForce GTX 470		133920 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 111520 (498%)

Texel Rate

The GeForce GTX 470 is quite a bit (about 77%) better at anisotropic filtering than the Radeon HD 4650 1GB. (explain)

GeForce GTX 470		33992 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 14792 (77%)

Pixel Rate

The GeForce GTX 470 is a lot (about 406%) more effective at full screen anti-aliasing than the Radeon HD 4650 1GB, and should be able to handle higher screen resolutions better. (explain)

GeForce GTX 470		24280 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 19480 (406%)

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 information (measured in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.