Radeon HD 4830 1GB vs Radeon R7 260X

Intro

Compare all of that to the Radeon R7 260X, which uses a 28 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 RAM is set to run at a frequency of 1625 MHz on this particular card. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 1GB		95 Watts
Radeon R7 260X		115 Watts
	Difference: 20 Watts (21%)

Memory Bandwidth

Performance-wise, the Radeon R7 260X should theoretically be a lot superior to the Radeon HD 4830 1GB overall. (explain)

Radeon R7 260X		104000 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 46400 (81%)

Texel Rate

The Radeon R7 260X should be much (approximately 235%) more effective at AF than the Radeon HD 4830 1GB. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 43200 (235%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R7 260X is a better choice, and very much so. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon HD 4830 1GB		9200 Mpixels/sec
	Difference: 8400 (91%)

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 (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.