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GeForce 9800 GT 1GB vs GeForce GT 440 1.5GB

Intro

The GeForce 9800 GT 1GB comes with a core clock frequency of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 256-bit bus, and uses a 65/55 nm design. It is made up of 112 SPUs, 56 TAUs, and 16 Raster Operation Units.

Compare those specifications to the GeForce GT 440 1.5GB, which features a GPU core clock speed of 594 MHz, and 1536 MB of GDDR3 memory running at 900 MHz through a 192-bit bus. It also is comprised of 144 SPUs, 24 TAUs, and 24 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB 56 Watts
GeForce 9800 GT 1GB 105 Watts
Difference: 49 Watts (88%)

Memory Bandwidth

Theoretically, the GeForce 9800 GT 1GB should perform much faster than the GeForce GT 440 1.5GB in general. (explain)

GeForce 9800 GT 1GB 57600 MB/sec
GeForce GT 440 1.5GB 43200 MB/sec
Difference: 14400 (33%)

Texel Rate

The GeForce 9800 GT 1GB should be quite a bit (approximately 136%) faster with regards to AF than the GeForce GT 440 1.5GB. (explain)

GeForce 9800 GT 1GB 33600 Mtexels/sec
GeForce GT 440 1.5GB 14256 Mtexels/sec
Difference: 19344 (136%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GT 440 1.5GB is the winner, and very much so. (explain)

GeForce GT 440 1.5GB 14256 Mpixels/sec
GeForce 9800 GT 1GB 9600 Mpixels/sec
Difference: 4656 (49%)

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

GeForce 9800 GT 1GB

Amazon.com

GeForce GT 440 1.5GB

Amazon.com

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

Model GeForce 9800 GT 1GB GeForce GT 440 1.5GB
Manufacturer nVidia nVidia
Year July 2008 October 2010
Code Name G92a/b GF106
Fab Process 65/55 nm 40 nm
Bus PCIe x16 2.0 PCIe x16
Memory 1024 MB 1536 MB
Core Speed 600 MHz 594 MHz
Shader Speed 1500 MHz 1189 MHz
Memory Speed 900 MHz (1800 MHz effective) 900 MHz (1800 MHz effective)
Unified Shaders 112 144
Texture Mapping Units 56 24
Render Output Units 16 24
Bus Type GDDR3 GDDR3
Bus Width 256-bit 192-bit
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1
Power (Max TDP) 105 watts 56 watts
Shader Model 4.0 5.0
Bandwidth 57600 MB/sec 43200 MB/sec
Texel Rate 33600 Mtexels/sec 14256 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 14256 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 in one second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Comments

One Response to “GeForce 9800 GT 1GB vs GeForce GT 440 1.5GB”
saf aesfeaw says:
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