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GeForce GT 440 1.5GB vs Radeon HD 6670 (OEM)

Intro

The GeForce GT 440 1.5GB has a GPU core clock speed of 594 MHz, and the 1536 MB of GDDR3 memory is set to run at 900 MHz through a 192-bit bus. It also is comprised of 144 SPUs, 24 Texture Address Units, and 24 ROPs.

Compare that to the Radeon HD 6670 (OEM), which comes with core speeds of 800 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 RAM. It features 480 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB 56 Watts
Radeon HD 6670 (OEM) 63 Watts
Difference: 7 Watts (13%)

Memory Bandwidth

In theory, the Radeon HD 6670 (OEM) will be 48% faster than the GeForce GT 440 1.5GB overall, because of its greater data rate. (explain)

Radeon HD 6670 (OEM) 64000 MB/sec
GeForce GT 440 1.5GB 43200 MB/sec
Difference: 20800 (48%)

Texel Rate

The Radeon HD 6670 (OEM) should be a lot (more or less 35%) faster with regards to texture filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 6670 (OEM) 19200 Mtexels/sec
GeForce GT 440 1.5GB 14256 Mtexels/sec
Difference: 4944 (35%)

Pixel Rate

The GeForce GT 440 1.5GB will be quite a bit (about 123%) faster with regards to anti-aliasing than the Radeon HD 6670 (OEM), and also will be capable of handling higher resolutions while still performing well. (explain)

GeForce GT 440 1.5GB 14256 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 7856 (123%)

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

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce GT 440 1.5GB

Amazon.com

Other US-based stores

Radeon HD 6670 (OEM)

Amazon.com

Other US-based stores

Specifications

Model GeForce GT 440 1.5GB Radeon HD 6670 (OEM)
Manufacturer nVidia ATi
Year October 2010 February 2011
Code Name GF106 Turks
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.1 x16
Memory 1536 MB 512 MB
Core Speed 594 MHz 800 MHz
Shader Speed 1189 MHz (N/A) MHz
Memory Speed 900 MHz (1800 MHz effective) 1000 MHz (4000 MHz effective)
Unified Shaders 144 480
Texture Mapping Units 24 24
Render Output Units 24 8
Bus Type GDDR3 GDDR5
Bus Width 192-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 56 watts 63 watts
Shader Model 5.0 5.0
Bandwidth 43200 MB/sec 64000 MB/sec
Texel Rate 14256 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 14256 Mpixels/sec 6400 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 maximum number of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

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