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GeForce GT 340 1GB vs Geforce GTX 670

Intro

The GeForce GT 340 1GB has a GPU clock speed of 550 MHz, and the 1024 MB of GDDR5 RAM is set to run at 850 MHz through a 128-bit bus. It also is comprised of 96 Stream Processors, 32 Texture Address Units, and 8 ROPs.

Compare all that to the Geforce GTX 670, which features a core clock speed of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is made up of 1344 SPUs, 112 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB 69 Watts
Geforce GTX 670 170 Watts
Difference: 101 Watts (146%)

Memory Bandwidth

In theory, the Geforce GTX 670 should be 253% quicker than the GeForce GT 340 1GB in general, due to its greater bandwidth. (explain)

Geforce GTX 670 192000 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 137600 (253%)

Texel Rate

The Geforce GTX 670 will be a lot (more or less 482%) better at anisotropic filtering than the GeForce GT 340 1GB. (explain)

Geforce GTX 670 102480 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 84880 (482%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Geforce GTX 670 is a better choice, and very much so. (explain)

Geforce GTX 670 29280 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 24880 (565%)

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 1GB

Amazon.com

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Geforce GTX 670

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 1GB Geforce GTX 670
Manufacturer nVidia nVidia
Year February 2010 May 2012
Code Name GT215 GK104
Memory 1024 MB 2048 MB
Core Speed 550 MHz 915 MHz
Memory Speed 3400 MHz 6000 MHz
Power (Max TDP) 69 watts 170 watts
Bandwidth 54400 MB/sec 192000 MB/sec
Texel Rate 17600 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 29280 Mpixels/sec
Unified Shaders 96 1344
Texture Mapping Units 32 112
Render Output Units 8 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 727 million 3540 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.0
OpenGL Version OpenGL 3.3 OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it must 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 amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GT 340 1GB

Amazon.com

Check prices at:

Geforce GTX 670

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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