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
GEFORCE
RTX 4000 Ada Generation
CORE STATE
AD104
VRAM
20 GB
CLOCK SPEED
2175 MHz
TDP
130 W
BUS WIDTH
160 bit
ARCHITECTURE
Ada Lovelace
PROCESS
5 nm
LAUNCH DATE
2023
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
RTX 4000 Ada Generation
Core Specs
Shading Units
960
6,144
+540.0%
Shaders
960
6,144
+540.0%
TMUs
48
192
+300.0%
ROPs
32
64
+100.0%
Compute Units
12
—
SM Count
—
48
Clocks
Base Clock
—
1500 MHz
Boost Clock
—
2175 MHz
GPU Clock
800 MHz
—
Memory Clock
1050 MHz
4.2 Gbps effective
2250 MHz
18 Gbps effective
Memory
Memory Size
2 GB
20 GB
VRAM (MB)
2,048
20,480
+900.0%
Memory Type
GDDR5
GDDR6
Memory Bus
256 bit
160 bit
Bandwidth
134.4 GB/s
360.0 GB/s
Cache
L1 Cache
8 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
48 MB
Performance
Pixel Rate
25.60 GPixel/s
139.2 GPixel/s
Texture Rate
38.40 GTexel/s
417.6 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
26.73 TFLOPS
FP64 (TFLOPS)
—
417.6 GFLOPS (1:64)
FP16 (TFLOPS)
—
26.73 TFLOPS (1:1)
AI/RT
RT Cores
—
48
Tensor Cores
—
192
Power
TDP
254 W
130 W
TDP (W)
254
130
-48.8%
Suggested PSU
600 W
300 W
Power Connectors
2x 8-pin
1x 16-pin
Architecture
Architecture
TeraScale 2
Ada Lovelace
GPU Name
Barts
AD104
Generation
Northern Islands
(HD 6800)
Workstation Ada
(x000A)
Process Size
40 nm
5 nm
Transistors
1,700 million
35,800 million
Die Size
255 mm²
294 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
121.8M / mm²
API Support
DirectX
11.2 (11_0)
12 Ultimate (12_2)
OpenGL
4.4
4.6
Vulkan
—
1.4
OpenCL
1.2
3.0
CUDA
—
8.9
Shader Model
5.0
6.8
Physical
Slot Width
Dual-slot
Single-slot
Length
—
245 mm
9.6 inches
Height
—
112 mm
4.4 inches
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
4x DisplayPort 1.4a
Bus Interface
PCIe 2.0 x16
PCIe 4.0 x16
Other
Production
End-of-life
Active
Predecessor
Evergreen
Workstation Ampere
Successor
Southern Islands
Blackwell PRO W