AMD Radeon HD 7850 vs AMD Radeon R9 270X
GPU Specs Compare
Graphics Card
Release Date
Mar 2012
Oct 2013
Generation
Southern Islands
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1200 MHz
1400 MHz
Base Clock
-
1000 MHz
Boost Clock
-
1050 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
153.6GB/s
179.2GB/s
Render Config
Compute Units
16
20
Shading Units
1024
1280
TMUs
64
80
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
27.52 GPixel/s
33.60 GPixel/s
Texture Rate
55.04 GTexel/s
84.00 GTexel/s
FP32 (float)
1.761 TFLOPS
2.688 TFLOPS
FP64 (double)
110.1 GFLOPS
168.0 GFLOPS
Graphics Processor
GPU Name
Pitcairn
Curacao
GPU Variant
Pitcairn PRO(215-0828062)
Curacao XT(215-0848004)
Architecture
GCN 1.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.8 billion
2.8 billion
Die Size
212 mm²
212 mm²
Board Design
TDP
130W
180W
Suggested PSU
300 W
450 W
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin
2x 6-pin
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.2
1.2
Shader Model
5.1
5.1
📊 Benchmark
3DMark Time Spy
1,334
1,769
3DMark Time Spy Extreme
325
-