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ASRock Item model number 970 EXTREME3 R2.0 Item Weight 2.8 pounds Product Dimensions 13.5 x 2.5 x 10.5 inches Item Dimensions L x W x H 13.5 x 2.5 x 10.5 inches Computer Memory Type DDR3 SDRAM. What is the difference between ASRock 970 Pro3 R2.0 and ASRock 970M Pro3? Find out which is better and their overall performance in the motherboard ranking. ASRock 970 Pro3 R2.0. ASRock 990FX Extreme3. ASRock 970M Pro3. Asus 970 Pro Gaming/Aura. ASRock 970 Pro3 R2.0. ASRock 970 Extreme4. More memory slots (also.
Asrock 970 Extreme4 Memory
Hi, I was using asrock 970 extreme4 bios version 2.00 with 8gb fully detected by windows 7 x64 ultimate
I just bought another pair Gskill 4gb 1600 cl9 (trying to match as much the ones i already have)
When I check windows says 16gb (7.98 usable)
- I noticed bios says single channel memory mode
- I checked the msconfig boot section memory limit was off
- Updated bios to 2.60
- I have tried different ram slots (always using same color slot for same pair of ram)
BIOS keep saying single channel memory mode so I remove the new ram, but now windows says: 8gb (3.96 usable)
Some sites talk about activating 'memory remap' in bios, which this asrock bios doesn't have.
What is IOMMU use for? I can't find no solution. Please, any idea?
Asrock 970 Extreme4 Motherboard
After getting some awful memory benchmarks, I referred to the manual which states:
If you adopt DDR3 2100/1866/1800/1600 memory modules on thismotherboard, it is recommended to install them on DDR3_A2 andDDR3_B2 slots.
Please install the memory module into the slots DDR3_A2 andDDR3_B2 for the first priority.
This reads to me.. that if you use default speeds, You can use either A1+B1 or A2+B2, but for higher speeds (like me), I should be using A2+B2 -- I wasn't.
So I SWITCHED. Before I got dual-channel.. now I don't. The manual states either combination should work.
Is this a case of just needing to clear the CMOS?