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GeForce GTS 150 vs Radeon HD 3470 256MB

Intro

The GeForce GTS 150 comes with core speeds of 740 MHz on the GPU, and 500 MHz on the 1024 MB of GDDR3 memory. It features 128 SPUs as well as 64 TAUs and 16 Rasterization Operator Units.

Compare that to the Radeon HD 3470 256MB, which has a clock speed of 800 MHz and a DDR2 memory frequency of 950 MHz. It also makes use of a 128-bit bus, and makes use of a 55 nm design. It features 40(8x5) SPUs, 4 TAUs, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTS 150 should in theory perform a bit faster than the Radeon HD 3470 256MB in general. (explain)

GeForce GTS 150 32000 MB/sec
Radeon HD 3470 256MB 30400 MB/sec
Difference: 1600 (5%)

Texel Rate

The GeForce GTS 150 should be much (more or less 1380%) more effective at texture filtering than the Radeon HD 3470 256MB. (explain)

GeForce GTS 150 47360 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 44160 (1380%)

Pixel Rate

The GeForce GTS 150 should be a lot (more or less 270%) better at full screen anti-aliasing than the Radeon HD 3470 256MB, and also capable of handling higher resolutions more effectively. (explain)

GeForce GTS 150 11840 Mpixels/sec
Radeon HD 3470 256MB 3200 Mpixels/sec
Difference: 8640 (270%)

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 GTS 150

Amazon.com

Check prices at:

Radeon HD 3470 256MB

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 GTS 150 Radeon HD 3470 256MB
Manufacturer nVidia AMD
Year March 10, 2009 2008
Code Name G92b RV620 PRO
Memory 1024 MB 256 MB
Core Speed 740 MHz 800 MHz
Memory Speed 1000 MHz 1900 MHz
Power (Max TDP) 141 watts (Unknown) watts
Bandwidth 32000 MB/sec 30400 MB/sec
Texel Rate 47360 Mtexels/sec 3200 Mtexels/sec
Pixel Rate 11840 Mpixels/sec 3200 Mpixels/sec
Unified Shaders 128 40(8x5)
Texture Mapping Units 64 4
Render Output Units 16 4
Bus Type GDDR3 DDR2
Bus Width 256-bit 128-bit
Fab Process 55 nm 55 nm
Transistors 754 million (Unknown) million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few 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 GTS 150

Amazon.com

Check prices at:

Radeon HD 3470 256MB

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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