Radeon RX 6500 XT vs Radeon HD 8990 OEM
We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6500 XT and 3GB VRAM Radeon HD 8990 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6500 XT Advantages
Released 8 years and 9 months late
Boost Clock has increased by 182% (2815MHz vs 1000MHz)
More VRAM (4GB vs 3GB)
Lower TDP (107W vs 375W)
Radeon HD 8990 OEM Advantages
Larger VRAM bandwidth (288.0GB/s vs 143.9GB/s)
1024 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 6500 XT
+40%
5765
Radeon HD 8990 OEM
4096
Graphics Card
Jan 2022
Release Date
Apr 2013
Navi II
Generation
Sea Islands
Desktop
Type
Desktop
PCIe 4.0 x4
Bus Interface
PCIe 3.0 x16
Clock Speeds
2310 MHz
Base Clock
950 MHz
2815 MHz
Boost Clock
1000 MHz
2248 MHz
Memory Clock
1500 MHz
Memory
4GB
Memory Size
3GB
GDDR6
Memory Type
GDDR5
64bit
Memory Bus
384bit
143.9GB/s
Bandwidth
288.0GB/s
Render Config
16
Compute Units
32
1024
Shading Units
2048
64
TMUs
128
32
ROPs
32
16
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
768 KB
16 MB
L3 Cache
-
Theoretical Performance
90.08 GPixel/s
Pixel Rate
32.00 GPixel/s
180.2 GTexel/s
Texture Rate
128.0 GTexel/s
11.53 TFLOPS
FP16 (half)
-
5.765 TFLOPS
FP32 (float)
4.096 TFLOPS
360.3 GFLOPS
FP64 (double)
1024 GFLOPS
Board Design
107W
TDP
375W
300 W
Suggested PSU
750 W
1x HDMI 2.1
1x DisplayPort 1.4a
1x DisplayPort 1.4a
Outputs
1x DVI
4x mini-DisplayPort 1.2
4x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
2x 8-pin
Graphics Processor
Navi 24
GPU Name
Malta
Navi 24 XT
(215-135000006)
(215-135000006)
GPU Variant
Malta XT
(215-0849026)
(215-0849026)
RDNA 2.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
6 nm
Process Size
28 nm
5.4 billion
Transistors
4.313 billion
107 mm²
Die Size
365 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.2
OpenCL
1.2
1.3
Vulkan
1.2
6.6
Shader Model
5.1
