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GeForce GT 340 1GB vs GeForce GTS 150

Intro

The GeForce GT 340 1GB makes use of a 40 nm design. nVidia has set the core frequency at 550 MHz. The GDDR5 memory works at a frequency of 850 MHz on this particular model. It features 96 SPUs along with 32 TAUs and 8 ROPs.

Compare those specifications to the GeForce GTS 150, which comes with a GPU core clock speed of 740 MHz, and 1024 MB of GDDR3 RAM running at 500 MHz through a 256-bit bus. It also is comprised of 128 SPUs, 64 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB 69 Watts
GeForce GTS 150 141 Watts
Difference: 72 Watts (104%)

Memory Bandwidth

In theory, the GeForce GT 340 1GB should perform a lot faster than the GeForce GTS 150 in general. (explain)

GeForce GT 340 1GB 54400 MB/sec
GeForce GTS 150 32000 MB/sec
Difference: 22400 (70%)

Texel Rate

The GeForce GTS 150 is quite a bit (approximately 169%) better at AF than the GeForce GT 340 1GB. (explain)

GeForce GTS 150 47360 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 29760 (169%)

Pixel Rate

The GeForce GTS 150 should be much (more or less 169%) faster with regards to full screen anti-aliasing than the GeForce GT 340 1GB, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTS 150 11840 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 7440 (169%)

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

Check prices at:

GeForce GTS 150

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

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Model GeForce GT 340 1GB GeForce GTS 150
Manufacturer nVidia nVidia
Year February 2010 March 10, 2009
Code Name GT215 G92b
Memory 1024 MB 1024 MB
Core Speed 550 MHz 740 MHz
Memory Speed 3400 MHz 1000 MHz
Power (Max TDP) 69 watts 141 watts
Bandwidth 54400 MB/sec 32000 MB/sec
Texel Rate 17600 Mtexels/sec 47360 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 11840 Mpixels/sec
Unified Shaders 96 128
Texture Mapping Units 32 64
Render Output Units 8 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 727 million 754 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10.1 DirectX 10
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GT 340 1GB

Amazon.com

Check prices at:

GeForce GTS 150

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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