If you use a dual cpu motherboard, 12 channels from each cpu would be added to a total of 24 channels, would that give you around 600 Gbps of memory bandwidth or more?
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- Thread starter itsakjt
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recently swapped the cpu, so just basic above-jedec tweak, that i didnt have to worry about affecting stability.
1800/3600C16-32-48/1T, RFC302, 1.36v, pbo disabled.
@Launcestonian
its really about finding out what the kit likes, e.g. test higher clocks/tighter timings without adding any V,
and see which can gain more (while stable)..
most low clock/CL like timings, kits over 3600 liked clocks, but only had a few kits outside mine.
1800/3600C16-32-48/1T, RFC302, 1.36v, pbo disabled.
@Launcestonian
its really about finding out what the kit likes, e.g. test higher clocks/tighter timings without adding any V,
and see which can gain more (while stable)..
most low clock/CL like timings, kits over 3600 liked clocks, but only had a few kits outside mine.
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My old X58 Build (GPU's at 1100/1400, Cpu volts upped .10 and multi @ 31)
"Four xGMI links maximum theoretical bandwidth is greater than 12 Channels 4800MHz DDR5 BW, which means remote memory access can flow nearly at maximum bandwidth from one CPU to another."
Source: https://lenovopress.lenovo.com/lp1852-configuring-amd-xgmi-links-on-thinksystem-sr665-v3
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Is this B-die any good? Found it hard to lower tRCD.
14-17 didn't pass; 15-17 or 14-18 would pass...
Now it's 15-17-15-30 45 at 1.39 V. Sort of sweetspot.
14-17 didn't pass; 15-17 or 14-18 would pass...
Now it's 15-17-15-30 45 at 1.39 V. Sort of sweetspot.
Attachments
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3600 15-17-15-30 45 1.39V RFC=288.png -
cachemem B-die 3600 15-17-15-30 45 1.39V tRFC=288.png
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@Яid!culousOwO
Enable Gear Down mode, set 1T command rate, and try lowering tRCD again.
However, I would recommend retesting settings you tried so far with GDM/1T, and comparing results to current ones (pick whichever is faster to you).
Side note : VDDG CCD might need adjusting to ~0.95V.
Enable Gear Down mode, set 1T command rate, and try lowering tRCD again.
However, I would recommend retesting settings you tried so far with GDM/1T, and comparing results to current ones (pick whichever is faster to you).
Side note : VDDG CCD might need adjusting to ~0.95V.
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VCCSA 1.35v - VDDQtx 1.275v - DRAM\VDIMM 1.56v
15-16-8-15-28@4250 Gear1 CommandRate 2T
(4133@Bclk 102.85)
VCCSA 1.35v - VDDQtx 1.275v - DRAM\VDIMM 1.56v
15-16-8-15-28@4250 Gear1 CommandRate 2T
(4133@Bclk 102.85)
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Weird got better results by loosening SCL's from 5/2 to 8/8...
VDD: 1.48v VDDQ/IO: 1.30v VSOC: 1.24v
VDD: 1.48v VDDQ/IO: 1.30v VSOC: 1.24v
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AMD Memory Tweak app had some graphics card vram timings of XXSCL both same and an even-value.
Also try safe mode of windows. I lowered from 56 to 54 ns by that.
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@slidestar It's recommended to test with TestMem5 running 1usmus or Anta777 profiles for at least a few hours, the default profile ran for a few minutes tells nothing about RAM stability.
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@3x0 Thanks alot. I forgot to change the path of the cfg file wrote in the cfg.link file, so a changed and rerun the test with Extreme1@anta777 config, it runs for about 10 minutes up to now and no errors, hopefully the test comletes without errors. Thanks again.
After 1+ hour, Test was completed without errors but as you notice the temperature of the module closer to the CPU max out at 79.8 celsius although it only peak at that temp for only a few seconds, long term max is 64 celsius. I don't add voltage to RAM its XMP voltage is 1.45V, these temps are dangerous or not, do you have any comments?
After 1+ hour, Test was completed without errors but as you notice the temperature of the module closer to the CPU max out at 79.8 celsius although it only peak at that temp for only a few seconds, long term max is 64 celsius. I don't add voltage to RAM its XMP voltage is 1.45V, these temps are dangerous or not, do you have any comments?
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I think I hit 54ns with this thing once, but it wasn't stable 
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VDD: 1.48v VDDQ/IO: 1.30v
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Dropped VDD: from 1.48v to 1.45v ( 57.9 to 57.7ns)
VDD: 1.45 VDDQ/IO: 1.30v
VDD: 1.45 VDDQ/IO: 1.30v
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Yeah, something like this, but Wheas fest IF2000
End finally for short Mhz Wheas free, happy me
Attachments
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5800X3D_BCLK_103,50_RAM 4000_CL14.png -
IMG_20240121_155620.png -
Screenshot_20240121_154923.png -
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Thanks bro. GDM off 2T is actually better than GDM 1T which is often called 2.5T.
Although my 5700X never boots with FCLK at 1900 MHz, amazingly it boots and works perfectly fine at 1933 MHz, and I tweaked my RAM to 3866 16-19-19-38 48 1.4V RFC=290. I'm a low-voltage lover and I'm satisfied.
i5-13500 (limited power for maximum efficiency)+ B660M DS3H + DDR4 Corsair Vengeance LPX @ 3200 CL16
SA: 0.9 V (locked)
VDDQ TX: 1.15 V (0.050 or 0.2 V undervolt*)
DRAM: 1.3 V (0.050 V undervolt)
GEAR 1
*Memory controller voltage.
XMP disabled: 1.2V
XMP enabled: 1.35V
DDR4 @3200MHz (via XMP) is overclocking for RAM but not for the processor, the controller supports 3200 MHz by default. I don't understand why this voltage is automatically raised to 1.35V when you activate XMP.
SA: 0.9 V (locked)
VDDQ TX: 1.15 V (0.050 or 0.2 V undervolt*)
DRAM: 1.3 V (0.050 V undervolt)
GEAR 1
*Memory controller voltage.
XMP disabled: 1.2V
XMP enabled: 1.35V
DDR4 @3200MHz (via XMP) is overclocking for RAM but not for the processor, the controller supports 3200 MHz by default. I don't understand why this voltage is automatically raised to 1.35V when you activate XMP.
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This CPU has been the most entertaining for me on AM4 
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| Mouse | Razor Viper Mini |
| Keyboard | Logitech G915 TKL |
| Software | Windows 11 Pro |
| Benchmark Scores | 3DMARK Time Spy Overall: 31875 Legendary 3DMARK Time Spy CPU: 15120 - 15th World |
Safe mode vs. normal Windows 11 Pro:
