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GPU Comparison
AMD Radeon RX 6650 XT vs AMD Radeon HD 6990
AMD Radeon RX 6650 XT vs AMD Radeon HD 6990
VS
AMD Radeon RX 6650 XT
AMD Radeon HD 6990
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6650 XT and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6650 XT 's Advantages
Released 11 years and 2 months late
Boost Clock2635MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (280.3GB/s vs 160.0GB/s)
512 additional rendering cores
Lower TDP (176W vs 375W)
Score
Benchmark
FP32 (float)
Radeon RX 6650 XT
+323%
10.79 TFLOPS
Radeon HD 6990
2.55 TFLOPS
Radeon RX 6650 XT
VS
Radeon HD 6990
Graphics Card
May 2022
Release Date
Mar 2011
Navi II
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
2055 MHz
Base Clock
-
2635 MHz
Boost Clock
-
2190 MHz
Memory Clock
1250 MHz
Memory
8GB
Memory Size
2GB
GDDR6
Memory Type
GDDR5
128bit
Memory Bus
256bit
280.3GB/s
Bandwidth
160.0GB/s
Render Config
-
SM Count
-
32
Compute Units
24
2048
Shading Units
1536
128
TMUs
96
64
ROPs
32
-
Tensor Cores
-
32
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
2 MB
L2 Cache
512 KB
Theoretical Performance
168.6 GPixel/s
Pixel Rate
26.56 GPixel/s
337.3 GTexel/s
Texture Rate
79.68 GTexel/s
21.59 TFLOPS
FP16 (half)
-
10.79 TFLOPS
FP32 (float)
2.550 TFLOPS
674.6 GFLOPS
FP64 (double)
637.4 GFLOPS
Graphics Processor
Navi 23
GPU Name
Antilles
Navi 23 KXT (215-130000136)
GPU Variant
Antilles XT (215-0807027)
RDNA 2.0
Architecture
TeraScale 3
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
11.06 billion
Transistors
2.64 billion
237 mm²
Die Size
389 mm²
Board Design
176W
TDP
375W
450 W
Suggested PSU
750 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
1x DVI 4x mini-DisplayPort 1.2
1x 8-pin
Power Connectors
2x 8-pin
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.3
Vulkan
N/A
-
CUDA
-
6.5
Shader Model
5.0
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