GPU Comparison
RADEON
AMD Radeon HD 6850 X2
CORE STATE
Barts
VRAM
2 GB
CLOCK SPEED
—
TDP
254 W
BUS WIDTH
256 bit
ARCHITECTURE
TeraScale 2
PROCESS
40 nm
LAUNCH DATE
2011
VS
GPU
Iris Pro Graphics P580
CORE STATE
Skylake GT4e
VRAM
System Shared
CLOCK SPEED
1000 MHz
TDP
15 W
BUS WIDTH
System Shared
ARCHITECTURE
Generation 9.0
PROCESS
14 nm+
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
Iris Pro Graphics P580
Core Specs
Shading Units
960
576
-40.0%
Shaders
960
576
-40.0%
TMUs
48
72
+50.0%
ROPs
32
9
-71.9%
Compute Units
12
—
Execution Units
—
72
Clocks
Base Clock
—
350 MHz
Boost Clock
—
1000 MHz
GPU Clock
800 MHz
—
Memory Clock
1050 MHz
4.2 Gbps effective
System Shared
Memory
Memory Size
2 GB
System Shared
VRAM (MB)
2,048
—
Memory Type
GDDR5
System Shared
Memory Bus
256 bit
System Shared
Bandwidth
134.4 GB/s
System Dependent
Cache
L1 Cache
8 KB (per CU)
—
L2 Cache
512 KB
—
Performance
Pixel Rate
25.60 GPixel/s
9.000 GPixel/s
Texture Rate
38.40 GTexel/s
72.00 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
1,152.0 GFLOPS
FP64 (TFLOPS)
—
288.0 GFLOPS (1:4)
FP16 (TFLOPS)
—
2.304 TFLOPS (2:1)
Power
TDP
254 W
15 W
TDP (W)
254
15
-94.1%
Suggested PSU
600 W
—
Power Connectors
2x 8-pin
—
Architecture
Architecture
TeraScale 2
Generation 9.0
GPU Name
Barts
Skylake GT4e
Generation
Northern Islands
(HD 6800)
HD Graphics-W
(Skylake)
Process Size
40 nm
14 nm+
Transistors
1,700 million
—
Die Size
255 mm²
—
Foundry
TSMC
Intel
Density
6.7M / mm²
—
API Support
DirectX
11.2 (11_0)
12 (12_1)
OpenGL
4.4
4.6
Vulkan
—
1.3
OpenCL
1.2
3.0
Shader Model
5.0
6.4
Physical
Slot Width
Dual-slot
IGP
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Motherboard Dependent
Bus Interface
PCIe 2.0 x16
Ring Bus
Other
Production
End-of-life
End-of-life
Predecessor
Evergreen
—
Successor
Southern Islands
—