GPUBoss Review Our evaluation of 620M vs 9800 GX2 among all GPUs

Gaming

Battlefield 3, Battlefield 4, Bioshock Infinite and 21 more

Graphics

T-Rex, Manhattan, Cloud Gate Factor, Sky Diver Factor and 1 more

Computing

Face Detection, Ocean Surface Simulation and 3 more

Performance per Watt

Battlefield 3, Battlefield 4, Bioshock Infinite and 32 more

Noise and Power

TDP, Idle Power Consumption, Load Power Consumption and 2 more

7.1

Overall Score

Winner
XFX GeForce 9800 GX2 

GPUBoss recommends the XFX GeForce 9800 GX2  based on its benchmarks.

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VS

Differences What are the advantages of each

Front view of GeForce GT 620M

Reasons to consider the
Nvidia GeForce GT 620M

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Much lower TDP 15W vs 197W 13.1x lower TDP
Front view of GeForce 9800 GX2

Reasons to consider the
XFX GeForce 9800 GX2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Higher memory bandwidth 134.4 GB/s vs 28.8 GB/s Around 4.8x higher memory bandwidth
Higher texture rate 89.6 GTexel/s vs 10.56 GTexel/s Around 8.5x higher texture rate
Significantly more texture mapping units 128 vs 16 112 more texture mapping units
Higher pixel rate 22.4 GPixel/s vs 2.64 GPixel/s Around 8.5x higher pixel rate
Significantly more render output processors 32 vs 4 28 more render output processors
Wider memory bus 512 bit vs 128 bit 4x wider memory bus
Higher memory clock speed 1,050 MHz vs 900 MHz More than 15% higher memory clock speed

Benchmarks Real world tests of GeForce GT 620M vs 9800 GX2

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the GeForce GT 620M  vs 9800 GX2 

memory bandwidth Rate at which data can be read from or stored in onboard memory

GeForce GT 620M
28.8 GB/s
GeForce 9800 GX2
134.4 GB/s

pixel rate Number of pixels a graphics card can render to the screen every second

GeForce GT 620M
2.64 GPixel/s
GeForce 9800 GX2
22.4 GPixel/s

texture rate Speed at which a graphics card can perform texture mapping

GeForce GT 620M
10.56 GTexel/s
GeForce 9800 GX2
89.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 620M
253.44 GFLOPS
GeForce 9800 GX2
870.4 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

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