GeForce GTX 965M vs Radeon HD 4650 1GB

Intro

Compare all of that to the Radeon HD 4650 1GB, which has GPU core speed of 600 MHz, and 1024 MB of GDDR3 RAM running at 700 MHz through a 128-bit bus. It also is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
GeForce GTX 965M		60 Watts
	Difference: 5 Watts (9%)

Memory Bandwidth

The GeForce GTX 965M should theoretically perform quite a bit faster than the Radeon HD 4650 1GB in general. (explain)

GeForce GTX 965M		64000 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 41600 (186%)

Texel Rate

The GeForce GTX 965M will be quite a bit (about 215%) better at AF than the Radeon HD 4650 1GB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 41216 (215%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 965M is superior to the Radeon HD 4650 1GB, and very much so. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 25408 (529%)

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 information (in units of megabytes per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics 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 chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.