GeForce GTX 950 vs Radeon HD 4830 1GB

Intro

Compare all of that to the Radeon HD 4830 1GB, which comes with clock speeds of 575 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR4 RAM. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
Radeon HD 4830 1GB		95 Watts
	Difference: 5 Watts (6%)

Memory Bandwidth

The GeForce GTX 950 should in theory be quite a bit faster than the Radeon HD 4830 1GB in general. (explain)

GeForce GTX 950		105728 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 48128 (84%)

Texel Rate

The GeForce GTX 950 should be quite a bit (about 167%) faster with regards to AF than the Radeon HD 4830 1GB. (explain)

GeForce GTX 950		49152 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 30752 (167%)

Pixel Rate

The GeForce GTX 950 is a lot (about 256%) better at anti-aliasing than the Radeon HD 4830 1GB, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 950		32768 Mpixels/sec
Radeon HD 4830 1GB		9200 Mpixels/sec
	Difference: 23568 (256%)

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 (counted in megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units 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 processed 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. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.