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Differences What are the advantages of each

Front view of Radeon HD 6450

Reasons to consider the
AMD Radeon HD 6450

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Higher effective memory clock speed 3,200 MHz vs 1,400 MHz More than 2.2x higher effective memory clock speed
Slightly higher memory clock speed 800 MHz vs 700 MHz Around 15% higher memory clock speed
Front view of Radeon E4690 PCIe

Reasons to consider the
Generic Radeon E4690 PCIe

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More texture mapping units 32 vs 8 24 more texture mapping units

Features Key features of the Radeon HD 6450  vs E4690 PCIe 

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

Radeon HD 6450
25.6 GB/s
Radeon E4690 PCIe
22.4 GB/s

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

Radeon HD 6450
2.5 GPixel/s
Radeon E4690 PCIe
4.8 GPixel/s

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

Radeon HD 6450
5 GTexel/s
Radeon E4690 PCIe
19.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6450
200 GFLOPS
Radeon E4690 PCIe
384 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

Radeon HD 6450  vs
E4690 PCIe 
GPU brand AMD ATI
GPU name Caicos PRO RV730
Market Desktop Laptop
Clock speed 625 MHz 600 MHz
Is dual GPU No No
Reference card None ATi Radeon E4690 PCIe 600 MHz 512 MB

raw performance

Shading units 160 320
Texture mapping units 8 32
Render output processors 4 8
Compute units 2 4
Pixel rate 2.5 GPixel/s 4.8 GPixel/s
Texture rate 5 GTexel/s 19.2 GTexel/s
Floating-point performance 200 GFLOPS 384 GFLOPS

memory

Radeon HD 6450  vs
E4690 PCIe 
Memory clock speed 800 MHz 700 MHz
Effective memory clock speed 3,200 MHz 1,400 MHz
Memory bus 64 bit 128 bit
Memory 512 MB 512 MB
Memory type GDDR5 GDDR3
Memory bandwidth 25.6 GB/s 22.4 GB/s

noise and power

TDP 18W 30W

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