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Differences What are the advantages of each

Front view of GeForce GTS 250

Reasons to consider the
ZOTAC GeForce GTS 250

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Higher memory bandwidth 73.6 GB/s vs 14.4 GB/s More than 5x higher memory bandwidth
Higher texture rate 48 GTexel/s vs 6.48 GTexel/s Around 7.5x higher texture rate
Significantly more texture mapping units 64 vs 8 56 more texture mapping units
Higher effective memory clock speed 2,300 MHz vs 1,800 MHz Around 30% higher effective memory clock speed
Significantly wider memory bus 256 bit vs 64 bit 4x wider memory bus
Higher pixel rate 12 GPixel/s vs 1.62 GPixel/s Around 7.5x higher pixel rate
More render output processors 16 vs 4 12 more render output processors
Higher memory clock speed 1,150 MHz vs 900 MHz Around 30% higher memory clock speed
Front view of GeForce GT 520 PCI

Reasons to consider the
Nvidia GeForce GT 520 PCI

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Significantly lower TDP 29W vs 150W 5.2x lower TDP

Features Key features of the GeForce GTS 250  vs GT 520 PCI 

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

GeForce GTS 250
73.6 GB/s
GeForce GT 520 PCI
14.4 GB/s

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

GeForce GTS 250
12 GPixel/s
GeForce GT 520 PCI
1.62 GPixel/s

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

GeForce GTS 250
48 GTexel/s
GeForce GT 520 PCI
6.48 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTS 250
483.8 GFLOPS
GeForce GT 520 PCI
155.52 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

Specifications Full list of technical specs

gpu

GeForce GTS 250  vs
GT 520 PCI 
GPU brand Nvidia Nvidia
GPU name G92 B1 GF119
Market Desktop Desktop
Clock speed 750 MHz 810 MHz
Is dual GPU No No
Reference card Nvidia GeForce GTS 250 702 MHz 1 GB None

raw performance

Shading units 128 48
Texture mapping units 64 8
Render output processors 16 4
Pixel rate 12 GPixel/s 1.62 GPixel/s
Texture rate 48 GTexel/s 6.48 GTexel/s
Floating-point performance 483.8 GFLOPS 155.52 GFLOPS

memory

GeForce GTS 250  vs
GT 520 PCI 
Memory clock speed 1,150 MHz 900 MHz
Effective memory clock speed 2,300 MHz 1,800 MHz
Memory bus 256 bit 64 bit
Memory 1,024 MB 1,024 MB
Memory type GDDR3 DDR3
Memory bandwidth 73.6 GB/s 14.4 GB/s

noise and power

TDP 150W 29W

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