AMD Radeon R9 390 vs AMD Radeon HD 6850 1440SP Edition
GPU Specs Compare
Graphics Card
Release Date
Jun 2015
Aug 2012
Generation
Pirate Islands
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Memory Clock
1500 MHz
1000 MHz
Memory
Memory Size
8GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
512bit
256bit
Bandwidth
384.0GB/s
128.0GB/s
Render Config
Compute Units
40
18
Shading Units
2560
1440
TMUs
160
72
ROPs
64
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
1024 KB
512 KB
Theoretical Performance
Pixel Rate
64.00 GPixel/s
23.20 GPixel/s
Texture Rate
160.0 GTexel/s
52.20 GTexel/s
FP32 (float)
5.120 TFLOPS
2.088 TFLOPS
FP64 (double)
640.0 GFLOPS
417.6 GFLOPS
Graphics Processor
GPU Name
Grenada
Cypress
GPU Variant
Grenada PRO(215-0880030)
Cypress PRO(215-0735043)
Architecture
GCN 2.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
6.2 billion
2.154 billion
Die Size
438 mm²
334 mm²
Board Design
TDP
275W
151W
Suggested PSU
600 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Power Connectors
1x 6-pin + 1x 8-pin
2x 6-pin
Graphics Features
DirectX
12 (12_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
2.0
1.2
Vulkan
1.2
N/A
Shader Model
6.3
5.0
📊 Benchmark
3DMark Time Spy
3,964
-
3DMark Time Spy Extreme
1,931
-