TechPowerUp’s BIOS collection revealed the final clock speeds of the upcoming Radeon R9 280X and 270X graphics cards.
AMD Radeon R9 270X
It is now officially confirmed that R9 270X will use CURACAO XT processor which will be clocked at 1000 MHz. In boost state GPU will run at 1050 MHz, making it slightly faster than HD 7870 GE. In addition to faster GPU clocks also the memory is running at higher frequency — 1400 MHz (5.6 GHz effective).
The card is equipped with 2GB GDDR5 memory across 256-bit bus (although this is not confirmed). Furthermore we also don’t know the exactly GPU configuration. For now we just know it’s CURACAO, which is a Pitcairn derivative. It could either have 1280 cores or 1536.
GPU Device Id: 0x1002 0x6810 113-C6310100-015 C63101
CURACAO XT GDDR5 64Mx32 2GB 150e/150m (C) 1988-2010, Advanced Micro Devices, Inc. ATOMBIOSBK-AMD VER015.033.000.001.002887 C6310100.015
PowerTune Limit: 113 to 169
CCC Overdrive Limits
GPU Clock: 1400.00 MHz
Memory Clock: 1625.00 MHz
Clock State 0
Core Clk: 1050.00 MHz
Memory Clk: 1400.00 MHz
Flags: Boot
Clock State 1
Core Clk: 1050.00 MHz
Memory Clk: 1400.00 MHz
Flags: Optimal Perf
Clock State 2
Core Clk: 1000.00 MHz
Memory Clk: 1400.00 MHz
Flags: UVD
Clock State 3
Core Clk: 300.00 MHz
Memory Clk: 150.00 MHz
AMD Radeon R9 280X
The R9 280X will be equipped with TAHITI XTL, which is a TAHITI XT rebrand. The reference clock is 850/1000 MHz. The memory will run at 1500 MHz, making it almost a pure HD 7970 GE refresh (depending if 850 MHz is just a clock on this engineering sample).
Radeon R9 280X will have 3GB GDDR5 memory with 384-bit interface. Tahiti GPU features 2048 Stream Processors, 128 texturing units and 32 rastering units.
GPU Device Id: 0x1002 0x6798 113-C3865000-100
Tahiti B0 XTL C38650 GDDR5 3GB 500e/150m (C) 1988-2010, Advanced Micro Devices, Inc. ATOMBIOSBK-AMD VER015.038.000.003.003331 C3865000.100
PowerTune Limit: 170 to 245
CCC Overdrive Limits
GPU Clock: 1500.00 MHz
Memory Clock: 2000.00 MHz
Clock State 0
Core Clk: 1000.00 MHz
Memory Clk: 1500.00 MHz
Flags: Boot
Clock State 1
Core Clk: 1000.00 MHz
Memory Clk: 1500.00 MHz
Flags: Optimal Perf
Clock State 2
Core Clk: 850.00 MHz
Memory Clk: 1500.00 MHz
Flags: UVD
