Compare any two graphics cards:

GeForce 820M vs GeForce 9500 GT DDR2

Intro

The GeForce 820M features core clock speeds of 719 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 96 SPUs as well as 16 TAUs and 4 ROPs.

Compare all that to the GeForce 9500 GT DDR2, which has core speeds of 550 MHz on the GPU, and 500 MHz on the 256 MB of DDR2 memory. It features 32 SPUs along with 16 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
GeForce 9500 GT DDR2		50 Watts
	Difference: 35 Watts (233%)

Memory Bandwidth

Both cards have the exact same memory bandwidth, so in theory they should perform the same. (explain)

Texel Rate

The GeForce 820M will be much (more or less 31%) more effective at anisotropic filtering than the GeForce 9500 GT DDR2. (explain)

GeForce 820M		11504 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 2704 (31%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 9500 GT DDR2 is the winner, by far. (explain)

GeForce 9500 GT DDR2		4400 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 1524 (53%)

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

Display Prices

Hide Prices

GeForce 820M

Amazon.com

Check prices at:

GeForce 9500 GT DDR2

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Display Specifications

Hide Specifications

Model	GeForce 820M	GeForce 9500 GT DDR2
Manufacturer	nVidia	nVidia
Year	February 2014	July 2008
Code Name	GF117	G96a
Memory	2048 MB	256 MB
Core Speed	719 MHz	550 MHz
Memory Speed	2000 MHz	1000 MHz
Power (Max TDP)	15 watts	50 watts
Bandwidth	16000 MB/sec	16000 MB/sec
Texel Rate	11504 Mtexels/sec	8800 Mtexels/sec
Pixel Rate	2876 Mpixels/sec	4400 Mpixels/sec
Unified Shaders	96	32
Texture Mapping Units	16	16
Render Output Units	4	8
Bus Type	DDR3	DDR2
Bus Width	64-bit	128-bit
Fab Process	28 nm	65 nm
Transistors	(Unknown) million	314 million
Bus	PCIe 2.0 x16	PCIe x16 2.0, PCI
DirectX Version	DirectX 12	DirectX 10
OpenGL Version	OpenGL 4.5	OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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 bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices