GeForce 830M vs Radeon HD 4550 512MB

Intro

Compare all that to the Radeon HD 4550 512MB, which comes with a core clock frequency of 600 MHz and a GDDR3 memory speed of 800 MHz. It also makes use of a 64-bit bus, and uses a 55 nm design. It is made up of 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce 830M should theoretically be a small bit faster than the Radeon HD 4550 512MB overall. (explain)

GeForce 830M		14400 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 830M is quite a bit (about 243%) better at AF than the Radeon HD 4550 512MB. (explain)

GeForce 830M		16464 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 11664 (243%)

Pixel Rate

The GeForce 830M should be quite a bit (approximately 243%) faster with regards to FSAA than the Radeon HD 4550 512MB, and will be able to handle higher resolutions without slowing down too much. (explain)

GeForce 830M		8232 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 5832 (243%)

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: Bandwidth is the largest amount of data (in units of MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics 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 amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.