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GPU Comparison
AMD Radeon HD 8870 OEM vs ATI Radeon HD 3850 X2
AMD Radeon HD 8870 OEM vs ATI Radeon HD 3850 X2
VS
AMD Radeon HD 8870 OEM
ATI Radeon HD 3850 X2
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 512MB VRAM Radeon HD 3850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 8870 OEM 's Advantages
Released 4 years and 9 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (153.6GB/s vs 52.99GB/s)
960 additional rendering cores
ATI Radeon HD 3850 X2 's Advantages
Lower TDP (140W vs 175W)
Score
Benchmark
FP32 (float)
Radeon HD 8870 OEM
+498%
2.56 TFLOPS
Radeon HD 3850 X2
0.428 TFLOPS
Radeon HD 8870 OEM
VS
Radeon HD 3850 X2
Graphics Card
Jan 2013
Release Date
Apr 2008
Sea Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1200 MHz
Memory Clock
828 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
256bit
153.6GB/s
Bandwidth
52.99GB/s
Render Config
20
Compute Units
4
-
-
-
1280
Shading Units
320
80
TMUs
16
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
32.00 GPixel/s
Pixel Rate
10.70 GPixel/s
80.00 GTexel/s
Texture Rate
10.70 GTexel/s
-
-
-
2.560 TFLOPS
FP32 (float)
428.2 GFLOPS
160.0 GFLOPS
FP64 (double)
85.63 GFLOPS
Board Design
175W
TDP
140W
450 W
Suggested PSU
300 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
-
Graphics Processor
Pitcairn
GPU Name
RV670
Pitcairn XT (215-0828047)
GPU Variant
RV670 PRO (215-0708003)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
2.8 billion
Transistors
0.666 billion
212 mm²
Die Size
192 mm²
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
4.1
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8
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