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post #21 of 29 (permalink) Old 10-26-2019, 08:20 AM
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no idea? check the FX performance tuning guide. go to page 4 or 18 and look at "HT link multiplier" https://images-eu.ssl-images-amazon....1GNCeR7T2S.pdf

edit: and that's for 990FX chipset. if you're on 970 it's less. 2400 or 2200 i can't remember?


Last edited by qtip-va; 10-26-2019 at 08:24 AM. Reason: more acurate information
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post #22 of 29 (permalink) Old 10-26-2019, 09:45 AM
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Quote: Originally Posted by dixson01974 View Post
There is really no performance boost with ocing the NB on the FX chips. The performance boost with the NB is on Phenom II/Athlon II chips only.
this is very wrong

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post #23 of 29 (permalink) Old 10-26-2019, 09:48 AM
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2600is a good spot for the CPU-NB. Shouldnt need much above stock CPU-NB volts to do this. 2700 is a really nice zone though but its harder to reach and may require a bit more voltage. FX once above around 4.6GHz can start to get a bit memory bottlenecked especially if you are on 1600MHz ram and a stock clocked CPU-NB. You can get a pretty good performance boost by getting the CPU-NB up to 2600 and ram close to 2000.

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XSPC Raystorm CPU Block
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EKWB Coolstream PE360
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6x CoolerMaster Jetflo's 120mm
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XSPC D5 Vario
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EKWB Coolstream CE280
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6 Corsair ML140's
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Barrow Vega 64 full cover waterblock.
Case
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post #24 of 29 (permalink) Old 10-26-2019, 09:57 AM
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Quote: Originally Posted by x86overclock View Post
I call you have no idea what you are talking about. Asus fixed th stock NB clocks and HT clocks when they released the Crosshair Formula-Z series. The Crosshair V Formula had the NB @ 2.2 and the HT @ 2.6 which was faulty and caused system bottlenecks. the Z series has the NB @ 2.4 and the HT at 2.2. You can read the official AMD FX overclocking guide and it explains why it is important to not have your HT exceed your NB.You can download the official AMD FX overclocking guide herehttps://www.google.com/url?sa=t&source=web&rct=j&url=https://www.amd.com/Documents/AMD_FX_Performance_Tuning_Guide.pdf&ved=0ahUKEwj8r-7h5eHUAhXK7iYKHfWeDbcQFggqMAE&usg=AFQjCNG16z6LqFF0 PK8dF4Vh9ZCDmrZ3GA and your welcome
Unfortunately for you, you are wrong. The HTT doesn't need to be clocked close to the NB at all. Infact the HTT can be clocked as high above NB as you want provided you can keep it stable. Having a high HTT clock can be quite benificial for MGPU systems as it increases the available bandwidth between CPU and the chipset. The bottlenecks on the OG CHV were caused simply by having the NB clocked to low and it caused a bit of bottle-necking in the memory subsystem. The HTT at 2600 is actually a perfect clockspeed and wont cause any instability whatsoever.



I have mine all clocked up at 5050MHz CPU / 2660MHz NB and 2925HTT.

If You Can Cool It! You Can Clock It! (AMD's Vishera)
GHOST rev 3.5
(26 items)
Rura Penthe
(12 items)
CPU
AMD FX-8370 DELIDDED @ 5050MHz 1.535V 2660MHz NB/2925MHz HTT
Motherboard
ASUS M5A99FX PRO R2.0
GPU
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RAM
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WD Blue 1 TB
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Cooling
XSPC D5 Bay Res
Cooling
1x CoolerMaster Storm Force 200
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XSPC Raystorm CPU Block
Cooling
EKWB Coolstream PE360
Cooling
6x CoolerMaster Jetflo's 120mm
Cooling
XSPC D5 Vario
Cooling
EKWB Coolstream CE280
Cooling
6 Corsair ML140's
Cooling
Barrow Vega 64 full cover waterblock.
Case
NZXT Phantom 820 Black
Operating System
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post #25 of 29 (permalink) Old 10-26-2019, 09:58 AM
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Quote: Originally Posted by qtip-va View Post
no idea? check the FX performance tuning guide. go to page 4 or 18 and look at "HT link multiplier" https://images-eu.ssl-images-amazon....1GNCeR7T2S.pdf

edit: and that's for 990FX chipset. if you're on 970 it's less. 2400 or 2200 i can't remember?
970 is 2200

If You Can Cool It! You Can Clock It! (AMD's Vishera)
GHOST rev 3.5
(26 items)
Rura Penthe
(12 items)
CPU
AMD FX-8370 DELIDDED @ 5050MHz 1.535V 2660MHz NB/2925MHz HTT
Motherboard
ASUS M5A99FX PRO R2.0
GPU
Sapphire RX Vega 64 (stock)
RAM
Corsair Dominator Platinum 2666 32GB @ 2127 9-10-9-27
Hard Drive
Samsung 850 PRO 1TB
Hard Drive
WD Blue 500GB
Hard Drive
WD Blue 1 TB
Hard Drive
Samsung Spinpoint HD502HI
Power Supply
Antec High Current Pro Platinum 1300W
Cooling
XSPC D5 Bay Res
Cooling
1x CoolerMaster Storm Force 200
Cooling
XSPC Raystorm CPU Block
Cooling
EKWB Coolstream PE360
Cooling
6x CoolerMaster Jetflo's 120mm
Cooling
XSPC D5 Vario
Cooling
EKWB Coolstream CE280
Cooling
6 Corsair ML140's
Cooling
Barrow Vega 64 full cover waterblock.
Case
NZXT Phantom 820 Black
Operating System
Windows 10 Pro 64-Bit
Monitor
Dell SE2717H
Keyboard
Roccat Ryos MK Pro
Mouse
Mionix Naos 7000
Mouse
Mionix Alioth
Audio
GX Gaming SW-G2.1 3000
Audio
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CPU
AMD Athlon 860K
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Asus A88X-Pro
GPU
MSI R6850 Cyclone Power Edition
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MSI R6850 Cyclone Power Edition
RAM
G-Skill Ares 2133 CL10 8GB (2x4GB)
Hard Drive
Seagate ST1000VX003
Optical Drive
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post #26 of 29 (permalink) Old 10-26-2019, 10:02 AM
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Quote: Originally Posted by Alastair View Post
this is very wrong
exactly. you can even just open up a command prompt and type: winsat mem and it will show you your system memory bandwidth, and oc'ing the NB will give you a big boost to memory bandwidth without even touching memory clocks/timings.
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post #27 of 29 (permalink) Old 10-26-2019, 10:02 AM
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Quote: Originally Posted by qtip-va View Post
i Quote: Originally Posted by x86overclock

I have had my FX 9590 for almost 4 years now and NB overclock will help in CPU and memory calculations but the HT should not exceed the NB. I know this was a stock setting Asus originally did with the Crosshair V Formula but it is incorrect. It is okay however to have a higher NB frequency than the HT Speed. Having a higher HT than NB causes instability issues and reduces your CPU's potential performance. To give you an idea why you don't want a higher HT is because every instruction that goes through the FX first hits your HTs and from your HTs goes through your cache and floating points then to your NB which sends and receives memory instruction. If your HT is higher than your NB you create a bottleneck in the CPU itself which reduces your processing and memory performance.


i call bull sh1z. stock ht on all FX chips is 2600 stock nb is 2200. i lose performance lowering ht and straight crash when trying to push the nb on my 8370. now on phenom i would agree w/ you totally. and actually the HT is the buss that the cores/modules/cache communicate/share data. basically it is used as a multiprocessor interconnect. its may actually your NB that's making you crash, its only stable because it's not being pushed as hard w/ a low HT speed??
Lowering HTT will reduce the bandwidth that is available to the PCIe lanes as the HTT is responsible for communicating with the chipset. Overclocking the CPU-NB will increase CPU performance as the CPU-NB is the memory controller of Vishera/Zambezi. Increasing CPU-NB not only increases the bandwidth to the system memory but also increases the clockspeed of the L3 cache as the L3 cache is tied to the clock of the CPU-NB. So increasing the speed of CPU-NB is extremely beneficial as FX is notorious for its slow cache. So by increasing the speed of the L3 cache there is a significant performance uplift to be had.

If You Can Cool It! You Can Clock It! (AMD's Vishera)
GHOST rev 3.5
(26 items)
Rura Penthe
(12 items)
CPU
AMD FX-8370 DELIDDED @ 5050MHz 1.535V 2660MHz NB/2925MHz HTT
Motherboard
ASUS M5A99FX PRO R2.0
GPU
Sapphire RX Vega 64 (stock)
RAM
Corsair Dominator Platinum 2666 32GB @ 2127 9-10-9-27
Hard Drive
Samsung 850 PRO 1TB
Hard Drive
WD Blue 500GB
Hard Drive
WD Blue 1 TB
Hard Drive
Samsung Spinpoint HD502HI
Power Supply
Antec High Current Pro Platinum 1300W
Cooling
XSPC D5 Bay Res
Cooling
1x CoolerMaster Storm Force 200
Cooling
XSPC Raystorm CPU Block
Cooling
EKWB Coolstream PE360
Cooling
6x CoolerMaster Jetflo's 120mm
Cooling
XSPC D5 Vario
Cooling
EKWB Coolstream CE280
Cooling
6 Corsair ML140's
Cooling
Barrow Vega 64 full cover waterblock.
Case
NZXT Phantom 820 Black
Operating System
Windows 10 Pro 64-Bit
Monitor
Dell SE2717H
Keyboard
Roccat Ryos MK Pro
Mouse
Mionix Naos 7000
Mouse
Mionix Alioth
Audio
GX Gaming SW-G2.1 3000
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Kingston Hyper X Cloud Core
CPU
AMD Athlon 860K
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Asus A88X-Pro
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MSI R6850 Cyclone Power Edition
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MSI R6850 Cyclone Power Edition
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G-Skill Ares 2133 CL10 8GB (2x4GB)
Hard Drive
Seagate ST1000VX003
Optical Drive
Samsung HD502HI
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Seagate M12II 620W
Cooling
Arctic Cooling Freezer A30
Case
Corsair Carbide SPEC-02
Operating System
Windows 10 Home Edition 64bit
Keyboard
Razer Lycrosa
CPU
Intel Celeron G1840
Motherboard
MSI Z97-Guard Pro
GPU
Gigabyte RX580 Gaming 4G
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post #28 of 29 (permalink) Old 10-30-2019, 06:36 PM
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Yes 2600 MHZ

i JUST SET my ht to 2600 MHZ no problems at (FX 8350 & GIGABYTE GA 970A-DS3P Ver. 2.1 BIOS- FD 02/26/2016
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post #29 of 29 (permalink) Old 10-31-2019, 07:16 AM
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Quote: Originally Posted by TechSense1986 View Post
i JUST SET my ht to 2600 MHZ no problems at (FX 8350 & GIGABYTE GA 970A-DS3P Ver. 2.1 BIOS- FD 02/26/2016
What clock speeds you running?

If You Can Cool It! You Can Clock It! (AMD's Vishera)
GHOST rev 3.5
(26 items)
Rura Penthe
(12 items)
CPU
AMD FX-8370 DELIDDED @ 5050MHz 1.535V 2660MHz NB/2925MHz HTT
Motherboard
ASUS M5A99FX PRO R2.0
GPU
Sapphire RX Vega 64 (stock)
RAM
Corsair Dominator Platinum 2666 32GB @ 2127 9-10-9-27
Hard Drive
Samsung 850 PRO 1TB
Hard Drive
WD Blue 500GB
Hard Drive
WD Blue 1 TB
Hard Drive
Samsung Spinpoint HD502HI
Power Supply
Antec High Current Pro Platinum 1300W
Cooling
XSPC D5 Bay Res
Cooling
1x CoolerMaster Storm Force 200
Cooling
XSPC Raystorm CPU Block
Cooling
EKWB Coolstream PE360
Cooling
6x CoolerMaster Jetflo's 120mm
Cooling
XSPC D5 Vario
Cooling
EKWB Coolstream CE280
Cooling
6 Corsair ML140's
Cooling
Barrow Vega 64 full cover waterblock.
Case
NZXT Phantom 820 Black
Operating System
Windows 10 Pro 64-Bit
Monitor
Dell SE2717H
Keyboard
Roccat Ryos MK Pro
Mouse
Mionix Naos 7000
Mouse
Mionix Alioth
Audio
GX Gaming SW-G2.1 3000
Audio
Kingston Hyper X Cloud Core
CPU
AMD Athlon 860K
Motherboard
Asus A88X-Pro
GPU
MSI R6850 Cyclone Power Edition
GPU
MSI R6850 Cyclone Power Edition
RAM
G-Skill Ares 2133 CL10 8GB (2x4GB)
Hard Drive
Seagate ST1000VX003
Optical Drive
Samsung HD502HI
Power Supply
Seagate M12II 620W
Cooling
Arctic Cooling Freezer A30
Case
Corsair Carbide SPEC-02
Operating System
Windows 10 Home Edition 64bit
Keyboard
Razer Lycrosa
CPU
Intel Celeron G1840
Motherboard
MSI Z97-Guard Pro
GPU
Gigabyte RX580 Gaming 4G
GPU
Gigabyte RX570 Gaming 4G
GPU
XFX RX480 reference edition 8G
GPU
Gigabyte RX570 Gaming 4g
GPU
Gigabyte RX570 Gaming 4G
RAM
G-Skill Ares F3-1600C9D
Hard Drive
Samsung 750 Evo 120GB
Power Supply
Gigabyte XP1200M
Cooling
Stock
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