GeForce GTX 465 vs Radeon HD 4650 1GB

Intro

Compare those specs to the Radeon HD 4650 1GB, which uses a 55 nm design. AMD has set the core speed at 600 MHz. The GDDR3 RAM is set to run at a frequency of 700 MHz on this model. It features 320(64x5) SPUs as well as 32 Texture Address Units 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 465		200 Watts
	Difference: 145 Watts (264%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 465 should be 358% faster than the Radeon HD 4650 1GB in general, because of its greater data rate. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 80192 (358%)

Texel Rate

The GeForce GTX 465 is much (about 39%) better at anisotropic filtering than the Radeon HD 4650 1GB. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 7508 (39%)

Pixel Rate

The GeForce GTX 465 will be a lot (approximately 305%) faster with regards to AA than the Radeon HD 4650 1GB, and should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 14624 (305%)

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 max amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.