Radeon HD 3850 X3 vs Radeon R9 270
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3850 X3 and 2GB VRAM Radeon R9 270 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 3850 X3 Advantages
Lower TDP (145W vs 150W)
Radeon R9 270 Advantages
Boost Clock925MHz
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (179.2GB/s vs 54.40GB/s)
960 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 3850 X3
428
Radeon R9 270
+453%
2368
Graphics Card
Unknown
Release Date
Nov 2013
Radeon R600
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
900 MHz
-
Boost Clock
925 MHz
850 MHz
Memory Clock
1400 MHz
Memory
512MB
Memory Size
2GB
GDDR3
Memory Type
GDDR5
256bit
Memory Bus
256bit
54.40GB/s
Bandwidth
179.2GB/s
Render Config
4
Compute Units
20
320
Shading Units
1280
16
TMUs
80
16
ROPs
32
-
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
512 KB
Theoretical Performance
10.70 GPixel/s
Pixel Rate
29.60 GPixel/s
10.70 GTexel/s
Texture Rate
74.00 GTexel/s
428.2 GFLOPS
FP32 (float)
2.368 TFLOPS
-
FP64 (double)
148.0 GFLOPS
Board Design
145W
TDP
150W
300 W
Suggested PSU
450 W
4x DVI
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x HDMI 1.4a
1x DisplayPort 1.2
1x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
RV670
GPU Name
Curacao
RV670 PRO
(215-0708003)
(215-0708003)
GPU Variant
Curacao PRO
(215-0848000)
(215-0848000)
TeraScale
Architecture
GCN 1.0
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
0.666 billion
Transistors
2.8 billion
192 mm²
Die Size
212 mm²
Graphics Features
10.1 (10_1)
DirectX
12 (11_1)
3.3 (full)
4.0 (partial)
4.0 (partial)
OpenGL
4.6
N/A
OpenCL
1.2
N/A
Vulkan
1.2
4.1
Shader Model
5.1
