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GeForce GT 340 vs GeForce GTX 860M

Intro

The GeForce GT 340 has clock speeds of 550 MHz on the GPU, and 850 MHz on the 512 MB of GDDR5 memory. It features 96 SPUs as well as 32 TAUs and 8 ROPs.

Compare those specs to the GeForce GTX 860M, which uses a 28 nm design. nVidia has set the core speed at 797 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this model. It features 1152 SPUs as well as 96 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M 45 Watts
GeForce GT 340 69 Watts
Difference: 24 Watts (53%)

Memory Bandwidth

In theory, the GeForce GTX 860M will be 18% faster than the GeForce GT 340 in general, due to its higher data rate. (explain)

GeForce GTX 860M 64000 MB/sec
GeForce GT 340 54400 MB/sec
Difference: 9600 (18%)

Texel Rate

The GeForce GTX 860M is a lot (approximately 335%) more effective at anisotropic filtering than the GeForce GT 340. (explain)

GeForce GTX 860M 76512 Mtexels/sec
GeForce GT 340 17600 Mtexels/sec
Difference: 58912 (335%)

Pixel Rate

The GeForce GTX 860M will be a lot (about 190%) faster with regards to AA than the GeForce GT 340, and able to handle higher resolutions better. (explain)

GeForce GTX 860M 12752 Mpixels/sec
GeForce GT 340 4400 Mpixels/sec
Difference: 8352 (190%)

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

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GeForce GT 340

Amazon.com

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GeForce GTX 860M

Amazon.com

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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

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Model GeForce GT 340 GeForce GTX 860M
Manufacturer nVidia nVidia
Year February 2010 March 12 2014
Code Name GT215 GM107
Memory 512 MB 4096 MB
Core Speed 550 MHz 797 MHz
Memory Speed 3400 MHz 4000 MHz
Power (Max TDP) 69 watts 45 watts
Bandwidth 54400 MB/sec 64000 MB/sec
Texel Rate 17600 Mtexels/sec 76512 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 12752 Mpixels/sec
Unified Shaders 96 1152
Texture Mapping Units 32 96
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 727 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12
OpenGL Version OpenGL 3.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock 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 rate also depends on many 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.

Display Prices

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GeForce GT 340

Amazon.com

Check prices at:

GeForce GTX 860M

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.

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