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
RADEON
Radeon RX 9070 GRE
CORE STATE
Navi 48
VRAM
12 GB
CLOCK SPEED
2790 MHz
TDP
220 W
BUS WIDTH
192 bit
ARCHITECTURE
RDNA 4.0
PROCESS
4 nm
LAUNCH DATE
2025
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
RX 9070 GRE
Core Specs
Shading Units
960
3,072
+220.0%
Shaders
960
3,072
+220.0%
TMUs
48
192
+300.0%
ROPs
32
96
+200.0%
Compute Units
12
48
+300.0%
Clocks
Base Clock
—
1420 MHz
Boost Clock
—
2790 MHz
GPU Clock
800 MHz
—
Game Clock
—
2220 MHz
Memory Clock
1050 MHz
4.2 Gbps effective
2250 MHz
18 Gbps effective
Memory
Memory Size
2 GB
12 GB
VRAM (MB)
2,048
12,288
+500.0%
Memory Type
GDDR5
GDDR6
Memory Bus
256 bit
192 bit
Bandwidth
134.4 GB/s
432.0 GB/s
Cache
L1 Cache
8 KB (per CU)
—
L2 Cache
512 KB
8 MB
L3 Cache
—
48 MB
L0 Cache
—
32 KB per WGP
Performance
Pixel Rate
25.60 GPixel/s
267.8 GPixel/s
Texture Rate
38.40 GTexel/s
535.7 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
34.28 TFLOPS
FP64 (TFLOPS)
—
1,071.4 GFLOPS (1:32)
FP16 (TFLOPS)
—
68.57 TFLOPS (2:1)
AI/RT
RT Cores
—
48
Matrix Cores
—
96
Power
TDP
254 W
220 W
TDP (W)
254
220
-13.4%
Suggested PSU
600 W
550 W
Power Connectors
2x 8-pin
2x 8-pin
Architecture
Architecture
TeraScale 2
RDNA 4.0
GPU Name
Barts
Navi 48
Generation
Northern Islands
(HD 6800)
Navi IV
(RX 9000)
Process Size
40 nm
4 nm
Transistors
1,700 million
53,900 million
Die Size
255 mm²
357 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
151.0M / mm²
API Support
DirectX
11.2 (11_0)
12 Ultimate (12_2)
OpenGL
4.4
4.6
Vulkan
—
1.4
OpenCL
1.2
2.2
Shader Model
5.0
6.8
Physical
Slot Width
Dual-slot
Dual-slot
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
1x HDMI 2.1b3x DisplayPort 2.1a
Bus Interface
PCIe 2.0 x16
PCIe 5.0 x16
Other
Production
End-of-life
Active
Predecessor
Evergreen
Navi III
Successor
Southern Islands
—