GeForce GTX 650 Ti vs Radeon HD 4650 1GB

Intro

Compare all that to the Radeon HD 4650 1GB, which features core speeds of 600 MHz on the GPU, and 700 MHz on the 1024 MB of GDDR3 memory. It features 320(64x5) 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 4650 1GB		55 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 55 Watts (100%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti is 286% quicker than the Radeon HD 4650 1GB in general, due to its greater bandwidth. (explain)

GeForce GTX 650 Ti		86400 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 64000 (286%)

Texel Rate

The GeForce GTX 650 Ti is much (more or less 209%) more effective at texture filtering than the Radeon HD 4650 1GB. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 40192 (209%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 650 Ti is the winner, by a large margin. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 10048 (209%)

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 (measured in megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.