AMD Radeon R9 M385X vs AMD Radeon R9 M390 Full Specs
896 Shaders 1.1GHz | 1,024 Shaders 958MHz |
4GB GDDR596GB/s | 2GB GDDR5174.7GB/s |
·· 1.97 TFLOPS | ·· 1.96 TFLOPS |
Form Factor Soldered | Form Factor Soldered |
TDP 75W | TDP 100W |
Radeon R9 M385X1.97 TFLOPSFP32Radeon R9 M3901.96 TFLOPSFP32Clock Speed ·· | Clock Speed ·· |
Peak OPS 1.97 TFLOPSFP32 | Peak OPS 1.96 TFLOPSFP32 |
FP32 1.97 TFLOPS | FP32 1.96 TFLOPS |
FP64 123.2 GFLOPS | FP64 122.6 GFLOPS |
Pixel Rate 17.6 GPixel/s | Pixel Rate 30.7 GPixel/s |
Texture Rate 61.6 GTexel/s | Texture Rate 61.3 GTexel/s |
Shaders 896 Shaders | Shaders 1,024 Shaders |
TMUs 56 TMUs | TMUs 64 TMUs |
ROPs 16 ROPs | ROPs 32 ROPs |
CUs 14 CUs | CUs 16 CUs |
Boost Clock 1.1GHz | Boost Clock 958MHz |
L2 Cache 256KB shared | L2 Cache 512KB shared |
4GB GDDR5 | 2GB GDDR5 |
Memory Bus 128-bit | Memory Bus 256-bit |
Memory Speed 6GT/s | Memory Speed 5.5GT/s |
Memory Bandwidth 96GB/s | Memory Bandwidth 174.7GB/s |
ECC No | ECC No |
TDP 75W | TDP 100W |
Multi-Monitor 3 | Multi-Monitor 3 |
HDCP HDCP 1.4 | HDCP - |
Encoder Model VCE 2.0 | Encoder Model VCE 1.0 |
Decoder Model UVD 4.2 | Decoder Model UVD 4.0 |
Form Factor Soldered | Form Factor Soldered |
Manufacturer | Manufacturer |
Chip Designer | Chip Designer |
Architecture | Architecture |
Family | Family |
Branding  | Branding |
Codename Bonaire | Codename Pitcairn |
Chip Variant Bonaire XT | Chip Variant Pitcairn Pro |
Market Segment Laptop | Market Segment Laptop |
Release Date May 5, 2015 | Release Date May 5, 2015 |
Foundry TSMC | Foundry TSMC |
Fabrication Node 28nm | Fabrication Node 28nm |
Die Size 160mm² | Die Size 212mm² |
Transistor Count 2.1 Billion | Transistor Count 2.8 Billion |
Transistor Density 13 MTr/mm² | Transistor Density 13.21 MTr/mm² |
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All-in-Ones - | All-in-Ones |