Home GPU Comparison ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 3450 PCI

ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 3450 PCI

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 512MB VRAM Radeon HD 3450 PCI 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)
280 additional rendering cores
ATI Radeon HD 3450 PCI 's Advantages
Lower TDP (25W vs 106W)

Score

Benchmark

FP32 (float)
Radeon HD 3870 Mac Edition +935%
0.497 TFLOPS
Radeon HD 3450 PCI
0.048 TFLOPS
VS

Graphics Card

Jun 2008
Release Date
Jan 2008
Radeon R600
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCI

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
40
16
TMUs
4
16
ROPs
4
-
-
-
-
-
-
-
-
-
256 KB
L2 Cache
64 KB
-
-
-

Theoretical Performance

12.43 GPixel/s
Pixel Rate
2.400 GPixel/s
12.43 GTexel/s
Texture Rate
2.400 GTexel/s
-
-
-
497.3 GFLOPS
FP32 (float)
48.00 GFLOPS
99.46 GFLOPS
FP64 (double)
-

Board Design

106W
TDP
25W
300 W
Suggested PSU
200 W
2x DVI 1x S-Video
Outputs
1x DVI 1x S-Video
1x 6-pin
Power Connectors
None

Graphics Processor

RV670
GPU Name
RV620
RV670 XT (215-0708005)
GPU Variant
RV620 LE
TeraScale
Architecture
TeraScale
TSMC
Foundry
TSMC
55 nm
Process Size
55 nm
0.666 billion
Transistors
0.181 billion
192 mm²
Die Size
67 mm²

Graphics Features

10.1 (10_1)
DirectX
10.1 (10_1)
3.3 (full) 4.0 (partial)
OpenGL
3.3
N/A
OpenCL
N/A
N/A
Vulkan
N/A
-
-
-
4.1
Shader Model
4.1

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