GeForce GTX 650 Ti vs Radeon HD 4830 1GB

Intro

Compare those specs to the Radeon HD 4830 1GB, which comes with core clock speeds of 575 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR4 memory. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 1GB		95 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 15 Watts (16%)

Memory Bandwidth

Performance-wise, the GeForce GTX 650 Ti should in theory be quite a bit better than the Radeon HD 4830 1GB in general. (explain)

GeForce GTX 650 Ti		86400 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 28800 (50%)

Texel Rate

The GeForce GTX 650 Ti is much (about 223%) better at texture filtering than the Radeon HD 4830 1GB. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 40992 (223%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 650 Ti is superior to the Radeon HD 4830 1GB, by far. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
Radeon HD 4830 1GB		9200 Mpixels/sec
	Difference: 5648 (61%)

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 largest amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that can be applied in one 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 the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.