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GeForce GT 240 GDDR5 vs Radeon R9 390 8G

Intro

The GeForce GT 240 GDDR5 uses a 40 nm design. nVidia has clocked the core frequency at 550 MHz. The GDDR5 RAM is set to run at a frequency of 850 MHz on this model. It features 96 SPUs along with 32 TAUs and 8 ROPs.

Compare that to the Radeon R9 390 8G, which has a clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 512-bit memory bus, and uses a 28 nm design. It is comprised of 2560 SPUs, 160 Texture Address Units, and 64 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 70 Watts
Radeon R9 390 8G 275 Watts
Difference: 205 Watts (293%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 390 8G will be 606% faster than the GeForce GT 240 GDDR5 in general, due to its greater data rate. (explain)

Radeon R9 390 8G 384000 MB/sec
GeForce GT 240 GDDR5 54400 MB/sec
Difference: 329600 (606%)

Texel Rate

The Radeon R9 390 8G will be much (about 809%) faster with regards to texture filtering than the GeForce GT 240 GDDR5. (explain)

Radeon R9 390 8G 160000 Mtexels/sec
GeForce GT 240 GDDR5 17600 Mtexels/sec
Difference: 142400 (809%)

Pixel Rate

The Radeon R9 390 8G will be quite a bit (about 1355%) better at AA than the GeForce GT 240 GDDR5, and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 390 8G 64000 Mpixels/sec
GeForce GT 240 GDDR5 4400 Mpixels/sec
Difference: 59600 (1355%)

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 240 GDDR5

Amazon.com

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Radeon R9 390 8G

Amazon.com

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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 240 GDDR5 Radeon R9 390 8G
Manufacturer nVidia AMD
Year Novermber 2009 June 2015
Code Name GT215 Grenada PRO
Memory 512 MB 8192 MB
Core Speed 550 MHz 1000 MHz
Memory Speed 3400 MHz 6000 MHz
Power (Max TDP) 70 watts 275 watts
Bandwidth 54400 MB/sec 384000 MB/sec
Texel Rate 17600 Mtexels/sec 160000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 64000 Mpixels/sec
Unified Shaders 96 2560
Texture Mapping Units 32 160
Render Output Units 8 64
Bus Type GDDR5 GDDR5
Bus Width 128-bit 512-bit
Fab Process 40 nm 28 nm
Transistors 289 million 6200 million
Bus PCIe x16 PCIe 3.0 ×16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.2 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported across the external memory interface within a 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 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied 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 figure is calculated by multiplying the number of ROPs 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GT 240 GDDR5

Amazon.com

Check prices at:

Radeon R9 390 8G

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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