AMD Radeon R9 280X vs AMD Radeon R9 380X
We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280X and 4GB VRAM Radeon R9 380X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 280X 's Advantages
Boost Clock1000MHz
Larger VRAM bandwidth (288.0GB/s vs 182.4GB/s)
AMD Radeon R9 380X 's Advantages
Released 2 years and 1 months late
More VRAM (4GB vs 3GB)
Lower TDP (190W vs 250W)
Score
Benchmark
FP32 (float)
Radeon R9 280X
+3%
4.096 TFLOPS
Radeon R9 380X
3.973 TFLOPS
3DMark Time Spy
Radeon R9 280X
2348
Radeon R9 380X
+28%
3011
Graphics Card
Oct 2013
Release Date
Nov 2015
Volcanic Islands
Generation
Pirate Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
850 MHz
Base Clock
-
1000 MHz
Boost Clock
-
1500 MHz
Memory Clock
1425 MHz
Memory
3GB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
288.0GB/s
Bandwidth
182.4GB/s
Render Config
32
Compute Units
32
-
-
-
2048
Shading Units
2048
128
TMUs
128
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
32.00 GPixel/s
Pixel Rate
31.04 GPixel/s
128.0 GTexel/s
Texture Rate
124.2 GTexel/s
-
FP16 (half)
3.973 TFLOPS
4.096 TFLOPS
FP32 (float)
3.973 TFLOPS
1024 GFLOPS
FP64 (double)
248.3 GFLOPS
Board Design
250W
TDP
190W
600 W
Suggested PSU
450 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
2x 6-pin
Graphics Processor
Tahiti
GPU Name
Antigua
Tahiti XTL
(215-0821065)
GPU Variant
Antigua XT
(215-0877016)
GCN 1.0
Architecture
GCN 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
5 billion
352 mm²
Die Size
366 mm²
Graphics Features
12 (11_1)
DirectX
12 (12_0)
4.6
OpenGL
4.6
1.2
OpenCL
2.0
1.2
Vulkan
1.2
-
-
-
5.1
Shader Model
6.3
