GeForce GT 640 DDR3 vs Radeon RX 460

Intro

Compare all of that to the Radeon RX 460, which makes use of a 14 nm design. AMD has set the core speed at 1090 MHz. The GDDR5 memory works at a frequency of 1750 MHz on this specific model. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 460		5595 points
GeForce GT 640 DDR3		1560 points
	Difference: 4035 (259%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3		65 Watts
Radeon RX 460		75 Watts
	Difference: 10 Watts (15%)

Memory Bandwidth

In theory, the Radeon RX 460 should perform a lot faster than the GeForce GT 640 DDR3 overall. (explain)

Radeon RX 460		112000 MB/sec
GeForce GT 640 DDR3		57024 MB/sec
	Difference: 54976 (96%)

Texel Rate

The Radeon RX 460 is a lot (approximately 112%) more effective at anisotropic filtering than the GeForce GT 640 DDR3. (explain)

Radeon RX 460		61040 Mtexels/sec
GeForce GT 640 DDR3		28800 Mtexels/sec
	Difference: 32240 (112%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 460 is superior to the GeForce GT 640 DDR3, by far. (explain)

Radeon RX 460		17440 Mpixels/sec
GeForce GT 640 DDR3		14400 Mpixels/sec
	Difference: 3040 (21%)

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 max amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory per 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 sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.