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GeForce GTS 150 vs Radeon HD 4670 512MB

Intro

The GeForce GTS 150 uses a 55 nm design. nVidia has set the core speed at 740 MHz. The GDDR3 memory runs at a frequency of 500 MHz on this card. It features 128 SPUs along with 64 TAUs and 16 ROPs.

Compare all of that to the Radeon HD 4670 512MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 memory works at a speed of 1000 MHz on this specific model. It features 320(64x5) SPUs along with 32 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB 70 Watts
GeForce GTS 150 141 Watts
Difference: 71 Watts (101%)

Memory Bandwidth

Both cards have exactly the same bandwidth, so in theory they should perform the same. (explain)

Texel Rate

The GeForce GTS 150 should be much (about 97%) more effective at texture filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTS 150 47360 Mtexels/sec
Radeon HD 4670 512MB 24000 Mtexels/sec
Difference: 23360 (97%)

Pixel Rate

The GeForce GTS 150 will be much (approximately 97%) better at FSAA than the Radeon HD 4670 512MB, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTS 150 11840 Mpixels/sec
Radeon HD 4670 512MB 6000 Mpixels/sec
Difference: 5840 (97%)

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 4670 512MB

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 4670 512MB
Manufacturer nVidia AMD
Year March 10, 2009 Sep 10, 2008
Code Name G92b RV730 XT
Memory 1024 MB 512 MB
Core Speed 740 MHz 750 MHz
Memory Speed 1000 MHz 2000 MHz
Power (Max TDP) 141 watts 70 watts
Bandwidth 32000 MB/sec 32000 MB/sec
Texel Rate 47360 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 11840 Mpixels/sec 6000 Mpixels/sec
Unified Shaders 128 320(64x5)
Texture Mapping Units 64 32
Render Output Units 16 8
Bus Type GDDR3 GDDR4/GDDR3/DDR3/DDR2
Bus Width 256-bit 128-bit
Fab Process 55 nm 55 nm
Transistors 754 million 514 million
Bus PCIe x16 2.0 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the 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 number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video 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 most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially 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 GTS 150

Amazon.com

Check prices at:

Radeon HD 4670 512MB

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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