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GPU Comparison
AMD Radeon HD 6990 vs AMD Radeon RX 7900 GRE
AMD Radeon HD 6990 vs AMD Radeon RX 7900 GRE
VS
AMD Radeon HD 6990
AMD Radeon RX 7900 GRE
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 16GB VRAM Radeon RX 7900 GRE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 7900 GRE 's Advantages
Released 12 years and 4 months late
Boost Clock2245MHz
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (576.0GB/s vs 160.0GB/s)
3584 additional rendering cores
Lower TDP (260W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 6990
2.55 TFLOPS
Radeon RX 7900 GRE
+1703%
45.98 TFLOPS
Radeon HD 6990
VS
Radeon RX 7900 GRE
Graphics Card
Mar 2011
Release Date
Jul 2023
Northern Islands
Generation
Navi III
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
1287 MHz
-
Boost Clock
2245 MHz
1250 MHz
Memory Clock
2250 MHz
Memory
2GB
Memory Size
16GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
256bit
160.0GB/s
Bandwidth
576.0GB/s
Render Config
-
SM Count
-
24
Compute Units
80
1536
Shading Units
5120
96
TMUs
320
32
ROPs
160
-
Tensor Cores
-
-
RT Cores
80
8 KB (per CU)
L1 Cache
256 KB per Array
512 KB
L2 Cache
6 MB
Theoretical Performance
26.56 GPixel/s
Pixel Rate
359.2 GPixel/s
79.68 GTexel/s
Texture Rate
718.4 GTexel/s
-
FP16 (half)
91.96 TFLOPS
2.550 TFLOPS
FP32 (float)
45.98 TFLOPS
637.4 GFLOPS
FP64 (double)
1437 GFLOPS
Graphics Processor
Antilles
GPU Name
Navi 31
Antilles XT (215-0807027)
GPU Variant
Navi 31 XL
TeraScale 3
Architecture
RDNA 3.0
TSMC
Foundry
TSMC
40 nm
Process Size
5 nm
2.64 billion
Transistors
57.7 billion
389 mm²
Die Size
529 mm²
Board Design
375W
TDP
260W
750 W
Suggested PSU
600 W
1x DVI 4x mini-DisplayPort 1.2
Outputs
1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C
2x 8-pin
Power Connectors
2x 8-pin
Graphics Features
11.2 (11_0)
DirectX
12 Ultimate (12_2)
4.4
OpenGL
4.6
1.2
OpenCL
2.2
N/A
Vulkan
1.3
-
CUDA
-
5.0
Shader Model
6.7
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