AMD Radeon HD 8990 OEM vs AMD Radeon R9 270X
GPU Specs Compare
Graphics Card
Release Date
Apr 2013
Oct 2013
Generation
Sea Islands
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
950 MHz
1000 MHz
Boost Clock
1000 MHz
1050 MHz
Memory Clock
1500 MHz
1400 MHz
Memory
Memory Size
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
288.0GB/s
179.2GB/s
Render Config
Compute Units
32
20
Shading Units
2048
1280
TMUs
128
80
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
512 KB
Theoretical Performance
Pixel Rate
32.00 GPixel/s
33.60 GPixel/s
Texture Rate
128.0 GTexel/s
84.00 GTexel/s
FP32 (float)
4.096 TFLOPS
2.688 TFLOPS
FP64 (double)
1024 GFLOPS
168.0 GFLOPS
Graphics Processor
GPU Name
Malta
Curacao
GPU Variant
Malta XT(215-0849026)
Curacao XT(215-0848004)
Architecture
GCN 1.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
4.313 billion
2.8 billion
Die Size
365 mm²
212 mm²
Board Design
TDP
375W
180W
Suggested PSU
750 W
450 W
Outputs
1x DVI4x mini-DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
2x 8-pin
2x 6-pin
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.2
1.2
Shader Model
5.1
5.1
📊 Benchmark
3DMark Time Spy
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