i noticed that my pc was sluggish so run cpuz. my g.skill ripjaws 2x2 4gbrl cl9 was displaying single channel when i run cpuz, it was running dual channel before and i didn't change anything. im using msi 890gxm-g65 mobo. any help will be much appreciated. thank you
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dual channel changed to single channel
- Thread starter zipfx
- Start date
Solution
Tradesman1
Legenda in Aeternum
- Jun 5, 2013
- 67,883
- 40
- 126,960
Do you have the DRAM in slots 1-3 or in 2-4 - if so should be dual channel, if they are in 1-2 or 3-4 then it will be single channel....Might also check with SiSandra (free version here:
http://www.softpedia.com/get/System/System-Info/SiSoftware-Sandra.shtml
CPU-Z doesn't always read correctly, especially on AMD
http://www.softpedia.com/get/System/System-Info/SiSoftware-Sandra.shtml
CPU-Z doesn't always read correctly, especially on AMD
my ram installed at slot 1&2 like indicated in the manual, i was using it more than 2 years running dual channel. i just noticed for past few months that my pc was performing slow so decided to run cpuz and there saw that my ram was running single channel.
2years ago report
Chipset
-------------------------------------------------------------------------
Northbridge AMD 890GX rev. 00
Southbridge AMD SB850 rev. 40
Memory Type DDR3
Memory Size 4096 MBytes
Channels Dual, (Unganged)
Memory Frequency 799.8 MHz (1:4)
CAS# latency (CL) 9.0
RAS# to CAS# delay (tRCD) 11
RAS# Precharge (tRP) 11
Cycle Time (tRAS) 29
Bank Cycle Time (tRC) 40
Command Rate (CR) 1T
Uncore Frequency 2199.4 MHz
last night cpuz report
Chipset
-------------------------------------------------------------------------
Northbridge AMD 890GX rev. 00
Southbridge AMD SB850 rev. 40
Memory Type DDR3
Memory Size 4096 MBytes
Channels Single
Memory Frequency 800.0 MHz (1:4)
CAS# latency (CL) 9.0
RAS# to CAS# delay (tRCD) 11
RAS# Precharge (tRP) 11
Cycle Time (tRAS) 29
Bank Cycle Time (tRC) 40
Command Rate (CR) 2T
Uncore Frequency 2000.0 MHz
2years ago report
Chipset
-------------------------------------------------------------------------
Northbridge AMD 890GX rev. 00
Southbridge AMD SB850 rev. 40
Memory Type DDR3
Memory Size 4096 MBytes
Channels Dual, (Unganged)
Memory Frequency 799.8 MHz (1:4)
CAS# latency (CL) 9.0
RAS# to CAS# delay (tRCD) 11
RAS# Precharge (tRP) 11
Cycle Time (tRAS) 29
Bank Cycle Time (tRC) 40
Command Rate (CR) 1T
Uncore Frequency 2199.4 MHz
last night cpuz report
Chipset
-------------------------------------------------------------------------
Northbridge AMD 890GX rev. 00
Southbridge AMD SB850 rev. 40
Memory Type DDR3
Memory Size 4096 MBytes
Channels Single
Memory Frequency 800.0 MHz (1:4)
CAS# latency (CL) 9.0
RAS# to CAS# delay (tRCD) 11
RAS# Precharge (tRP) 11
Cycle Time (tRAS) 29
Bank Cycle Time (tRC) 40
Command Rate (CR) 2T
Uncore Frequency 2000.0 MHz
Tradesman1
Legenda in Aeternum
- Jun 5, 2013
- 67,883
- 40
- 126,960
Something's been changed in the BIOS, CR is different, Uncore is different, check in the BIOS (may have reset from a power surge or something and look for the Ganged/unganged option
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