GeForce 840M vs GeForce 9500 GT 1GB GDDR3

Intro

Compare all of that to the GeForce 9500 GT 1GB GDDR3, which features core speeds of 550 MHz on the GPU, and 800 MHz on the 1024 MB of GDDR3 RAM. It features 32 SPUs along with 16 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 840M		30 Watts
GeForce 9500 GT 1GB GDDR3		50 Watts
	Difference: 20 Watts (67%)

Memory Bandwidth

The GeForce 9500 GT 1GB GDDR3 should in theory be quite a bit faster than the GeForce 840M in general. (explain)

GeForce 9500 GT 1GB GDDR3		25600 MB/sec
GeForce 840M		16000 MB/sec
	Difference: 9600 (60%)

Texel Rate

The GeForce 840M should be a lot (about 181%) better at texture filtering than the GeForce 9500 GT 1GB GDDR3. (explain)

GeForce 840M		24696 Mtexels/sec
GeForce 9500 GT 1GB GDDR3		8800 Mtexels/sec
	Difference: 15896 (181%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 840M is superior to the GeForce 9500 GT 1GB GDDR3, by far. (explain)

GeForce 840M		8232 Mpixels/sec
GeForce 9500 GT 1GB GDDR3		4400 Mpixels/sec
	Difference: 3832 (87%)

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 transported across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.