Home GPU Comparison ATI Radeon HD 3870 Mac Edition vs AMD Radeon R9 280

ATI Radeon HD 3870 Mac Edition vs AMD Radeon R9 280

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 3GB VRAM Radeon R9 280 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
Lower TDP (106W vs 200W)
AMD Radeon R9 280 's Advantages
Released 5 years and 9 months late
Boost Clock933MHz
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (240.0GB/s vs 72.06GB/s)
1472 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon HD 3870 Mac Edition
0.497 TFLOPS
Radeon R9 280 +572%
3.344 TFLOPS
VS

Graphics Card

Jun 2008
Release Date
Mar 2014
Radeon R600
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

-
Base Clock
827 MHz
-
Boost Clock
933 MHz
1126 MHz
Memory Clock
1250 MHz

Memory

512MB
Memory Size
3GB
GDDR4
Memory Type
GDDR5
256bit
Memory Bus
384bit
72.06GB/s
Bandwidth
240.0GB/s

Render Config

4
Compute Units
28
-
-
-
320
Shading Units
1792
16
TMUs
112
16
ROPs
32
-
-
-
-
-
-
-
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
768 KB
-
-
-

Theoretical Performance

12.43 GPixel/s
Pixel Rate
29.86 GPixel/s
12.43 GTexel/s
Texture Rate
104.5 GTexel/s
-
-
-
497.3 GFLOPS
FP32 (float)
3.344 TFLOPS
99.46 GFLOPS
FP64 (double)
836.0 GFLOPS

Board Design

106W
TDP
200W
300 W
Suggested PSU
550 W
2x DVI 1x S-Video
Outputs
1x DVI 2x HDMI 1.4a 1x DisplayPort 1.2
1x 6-pin
Power Connectors
1x 6-pin + 1x 8-pin

Graphics Processor

RV670
GPU Name
Tahiti
RV670 XT (215-0708005)
GPU Variant
Tahiti PRO3 (215-0821330)
TeraScale
Architecture
GCN 1.0
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
0.666 billion
Transistors
4.313 billion
192 mm²
Die Size
352 mm²

Graphics Features

10.1 (10_1)
DirectX
12 (11_1)
3.3 (full) 4.0 (partial)
OpenGL
4.6
N/A
OpenCL
1.2
N/A
Vulkan
1.2
-
-
-
4.1
Shader Model
5.1

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