GeForce GTX 650 Ti vs Radeon HD 4650 512MB

Intro

Compare all of that to the Radeon HD 4650 512MB, which uses a 55 nm design. AMD has clocked the core speed at 600 MHz. The DDR2 RAM runs at a frequency of 500 MHz on this specific model. 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 512MB		55 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 55 Watts (100%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti should be much faster than the Radeon HD 4650 512MB overall. (explain)

GeForce GTX 650 Ti		86400 MB/sec
Radeon HD 4650 512MB		16000 MB/sec
	Difference: 70400 (440%)

Texel Rate

The GeForce GTX 650 Ti is quite a bit (about 209%) faster with regards to texture filtering than the Radeon HD 4650 512MB. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
Radeon HD 4650 512MB		19200 Mtexels/sec
	Difference: 40192 (209%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 650 Ti is superior to the Radeon HD 4650 512MB, and very much so. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
Radeon HD 4650 512MB		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 maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 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 better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure 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 outputting the pixels (image) to 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 memory bandwidth is, the lower the potential to get to the max fill rate.