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 7900M
CORE STATE
Navi 31
VRAM
16 GB
CLOCK SPEED
2090 MHz
TDP
180 W
BUS WIDTH
256 bit
ARCHITECTURE
RDNA 3.0
PROCESS
5 nm
LAUNCH DATE
2023
PERFORMANCE BENCHMARKS
geekbench_opencl
3dmark_3dmark_steel_nomad_dx12
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
RX 7900M
Core Specs
Shading Units
960
4,608
+380.0%
Shaders
960
4,608
+380.0%
TMUs
48
288
+500.0%
ROPs
32
192
+500.0%
Compute Units
12
72
+500.0%
Clocks
Base Clock
—
1825 MHz
Boost Clock
—
2090 MHz
GPU Clock
800 MHz
—
Memory Clock
1050 MHz
4.2 Gbps effective
2250 MHz
18 Gbps effective
Memory
Memory Size
2 GB
16 GB
VRAM (MB)
2,048
16,384
+700.0%
Memory Type
GDDR5
GDDR6
Memory Bus
256 bit
256 bit
Bandwidth
134.4 GB/s
576.0 GB/s
Cache
L1 Cache
8 KB (per CU)
256 KB per Array
L2 Cache
512 KB
6 MB
L3 Cache
—
64 MB
L0 Cache
—
64 KB per WGP
Performance
Pixel Rate
25.60 GPixel/s
401.3 GPixel/s
Texture Rate
38.40 GTexel/s
601.9 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
38.52 TFLOPS
FP64 (TFLOPS)
—
1,203.8 GFLOPS (1:32)
FP16 (TFLOPS)
—
77.05 TFLOPS (2:1)
AI/RT
RT Cores
—
72
Power
TDP
254 W
180 W
TDP (W)
254
180
-29.1%
Suggested PSU
600 W
—
Power Connectors
2x 8-pin
None
Architecture
Architecture
TeraScale 2
RDNA 3.0
GPU Name
Barts
Navi 31
Codename
—
Plum Bonito
Generation
Northern Islands
(HD 6800)
Navi Mobile
(RX 7000M)
Process Size
40 nm
5 nm
Transistors
1,700 million
57,700 million
Die Size
255 mm²
529 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
109.1M / mm²
AMD MCM
GCD Transistors
—
45,400 million
GCD Die Size
—
304.35 mm²
MCD Transistors
—
2,050 million x6
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
IGP
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Portable Device Dependent
Bus Interface
PCIe 2.0 x16
PCIe 4.0 x16
Other
Production
End-of-life
Active
Predecessor
Evergreen
Polaris Mobile
Successor
Southern Islands
—