Home GPU Comparison ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 5450

ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 5450

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 512MB VRAM Radeon HD 5450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 Mac Edition 's Advantages
Larger VRAM bandwidth (72.06GB/s vs 6.400GB/s)
240 additional rendering cores
ATI Radeon HD 5450 's Advantages
Released 1 years and 8 months late
Lower TDP (19W vs 106W)

Score

Benchmark

FP32 (float)
Radeon HD 3870 Mac Edition +377%
0.497 TFLOPS
Radeon HD 5450
0.104 TFLOPS
VS

Graphics Card

Jun 2008
Release Date
Feb 2010
Radeon R600
Generation
Evergreen
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
1126 MHz
Memory Clock
400 MHz

Memory

512MB
Memory Size
512MB
GDDR4
Memory Type
DDR2
256bit
Memory Bus
64bit
72.06GB/s
Bandwidth
6.400GB/s

Render Config

4
Compute Units
2
-
-
-
320
Shading Units
80
16
TMUs
8
16
ROPs
4
-
-
-
-
-
-
-
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
128 KB
-
-
-

Theoretical Performance

12.43 GPixel/s
Pixel Rate
2.600 GPixel/s
12.43 GTexel/s
Texture Rate
5.200 GTexel/s
-
-
-
497.3 GFLOPS
FP32 (float)
104.0 GFLOPS
99.46 GFLOPS
FP64 (double)
-

Board Design

106W
TDP
19W
300 W
Suggested PSU
200 W
2x DVI 1x S-Video
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
1x 6-pin
Power Connectors
None

Graphics Processor

RV670
GPU Name
Cedar
RV670 XT (215-0708005)
GPU Variant
Cedar PRO
TeraScale
Architecture
TeraScale 2
TSMC
Foundry
TSMC
55 nm
Process Size
40 nm
0.666 billion
Transistors
0.292 billion
192 mm²
Die Size
59 mm²

Graphics Features

10.1 (10_1)
DirectX
11.2 (11_0)
3.3 (full) 4.0 (partial)
OpenGL
4.4
N/A
OpenCL
1.2
N/A
Vulkan
N/A
-
-
-
4.1
Shader Model
5.0

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