Overclock.net › Forums › AMD › AMD CPUs › [OFFICIAL] FX-8320/FX-8350 Vishera Owners Club
New Posts  All Forums:Forum Nav:

[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 47

post #461 of 67002
Suprised noone here has hit this yet

a897352e_Cinebench5.2Ghz.png

Can't wait to get one of these bad boys to play with. I had my FX 8150 to 5.2Ghz @ 1.6v (Benchmark Stable) On my Gigabyte UD3 Rev 1.0

I have a feeling a lot of people here are starting with way too much voltage.

1st step before setting 1.5v and going for 5Ghz should be,

1) Lowest voltage @ stock Frequency with turbo disabled, then go up from there.

(For anyone that overclocked Bulldozer your stock voltage with turbo disabled would be between 1.28-1.35) i.e. the best chips had a stock vid of 1.32v - will be different for Piledriver

You should start listing this info to get an idea of the leakage of this Generation.

Resonant Clock Mesh works differently as well. So by increasing the temp, you reduce the effeciency of that.

You will need to find a balance of Frequency and Temp while maintaining full function of the RCM to reach the best clocks.
Edited by ComputerRestore - 10/25/12 at 7:17am
post #462 of 67002
^ It's worth pointing out that I didn't start at 1.50 V. That is just as high as I was willing to go last night.
post #463 of 67002
Quote:
Originally Posted by Particle View Post

^ It's worth pointing out that I didn't start at 1.50 V. That is just as high as I was willing to go last night.

That's great. How low did you get the voltage @ 4Ghz with turbo disabled that was still stable?

I'm going to estimate that a good starting baseline with these chips, would be

- 4Ghz @ 1.2v (maybe even less)
- It would be nice to see it at 4.8Ghz @ 1.35v and under 50c on a decent Air Cooler. My 8150 that was 30% less effecient could do 4.8Ghz at 1.44v

Bulldozer was effected by more than 2 Dimms of Ram in Dual Channel Mode at or over 1866Mhz. To rule out stability issues if you are running 4 Ram Modules

Going to guess they would top out around 5.5Ghz under water @ around 1.55v
Edited by ComputerRestore - 10/25/12 at 7:40am
post #464 of 67002
FX8350 has appeared on Taobao. Only three sellers, with one charging a lot more than the other two.

http://item.taobao.com/item.htm?spm=a230r.1.10.14.eDK2Er&id=17637679453

http://item.taobao.com/item.htm?spm=a230r.1.10.14.eDK2Er&id=17637679453

If these 8350's remain at 1400 RMB I am definitely getting one, as it's a lower price than I paid for my 955BE C2.

I wish I had the money, I'd order one tomorrow but need to wait another week or two mad.gif
The girlfriend.
(15 items)
 
The Mistress
(13 items)
 
Media Server
(11 items)
 
CPUMotherboardGraphicsRAM
FX8320 @ 4.5 Crosshair V (Third One) 290 Tri-X OC 16GB HyperX 
Hard DriveHard DriveHard DriveCooling
Sandisk SSD Plus 240GB Toshiba 3TB Hitachi 2TB Swiftech H220-X 
OSMonitorKeyboardPower
Win 8.1/Mint Viewsonic VX2457-mhd Fuhlen L411 Slim Super Flower Golden King 650W 
CaseMouseMouse Pad
Enthoo Pro G400 Super Flower 
CPUMotherboardGraphicsRAM
A8-6410 Lenovo Lancer 4B2 K16.3 R5 128 Shaders/M230 Hynix 8GB DDR3 1600 
Hard DriveHard DriveOSMonitor
Samsung 840 120 GB SSD Seagate Momentus 1TB 5400rmp Win 8.1 CMN1487 TN LED 14" 1366*768 
KeyboardPowerMouseMouse Pad
Lenovo AccuType 2900mAh/41Wh Elan Trackpad/Logitech M90 Super Flower 
Audio
AMD Avalon(Connexant) 
  hide details  
Reply
The girlfriend.
(15 items)
 
The Mistress
(13 items)
 
Media Server
(11 items)
 
CPUMotherboardGraphicsRAM
FX8320 @ 4.5 Crosshair V (Third One) 290 Tri-X OC 16GB HyperX 
Hard DriveHard DriveHard DriveCooling
Sandisk SSD Plus 240GB Toshiba 3TB Hitachi 2TB Swiftech H220-X 
OSMonitorKeyboardPower
Win 8.1/Mint Viewsonic VX2457-mhd Fuhlen L411 Slim Super Flower Golden King 650W 
CaseMouseMouse Pad
Enthoo Pro G400 Super Flower 
CPUMotherboardGraphicsRAM
A8-6410 Lenovo Lancer 4B2 K16.3 R5 128 Shaders/M230 Hynix 8GB DDR3 1600 
Hard DriveHard DriveOSMonitor
Samsung 840 120 GB SSD Seagate Momentus 1TB 5400rmp Win 8.1 CMN1487 TN LED 14" 1366*768 
KeyboardPowerMouseMouse Pad
Lenovo AccuType 2900mAh/41Wh Elan Trackpad/Logitech M90 Super Flower 
Audio
AMD Avalon(Connexant) 
  hide details  
Reply
post #465 of 67002
Quote:
Originally Posted by ComputerRestore View Post

Resonant Clock Mesh works differently as well. So by increasing the temp, you reduce the effeciency of that.
You will need to find a balance of Frequency and Temp while maintaining full function of the RCM to reach the best clocks.

PD doesn't have RCM.
mitx
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570K 4.5ghz ASRock Z77E-ITX Sapphire R9 290x Tri-X 1200/1500 Crucial Ballistix Tactical LP 2x8 GB 8-8-8-24-1T 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Pro 256gb Western Digital Velociraptor Western Digital WD15EARX Western Digital WD15EADS 
CoolingOSMonitorKeyboard
Silverstone NT06-Pro Windows 10 x64 LG 29UM67 Logitech G710+ 
PowerCaseMouseAudio
Silverstone SG08 600W PSU Silverstone SG08B Logitech G700 Pioneer SE-A1000 
  hide details  
Reply
mitx
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570K 4.5ghz ASRock Z77E-ITX Sapphire R9 290x Tri-X 1200/1500 Crucial Ballistix Tactical LP 2x8 GB 8-8-8-24-1T 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Pro 256gb Western Digital Velociraptor Western Digital WD15EARX Western Digital WD15EADS 
CoolingOSMonitorKeyboard
Silverstone NT06-Pro Windows 10 x64 LG 29UM67 Logitech G710+ 
PowerCaseMouseAudio
Silverstone SG08 600W PSU Silverstone SG08B Logitech G700 Pioneer SE-A1000 
  hide details  
Reply
post #466 of 67002
Quote:
Originally Posted by ComputerRestore View Post

That's great. How low did you get the voltage @ 4Ghz with turbo disabled that was still stable?
I'm going to estimate that a good starting baseline with these chips, would be
- 4Ghz @ 1.2v (maybe even less)
- It would be nice to see it at 4.8Ghz @ 1.35v and under 50c on a decent Air Cooler. My 8150 that was 30% less effecient could do 4.8Ghz at 1.44v
Bulldozer was effected by more than 2 Dimms of Ram in Dual Channel Mode at or over 1866Mhz. To rule out stability issues if you are running 4 Ram Modules

I started at stock and worked my way up from there. I haven't done undervolting tests. The RAM thing is good to know. Fortunately I was testing with just two DIMMs. It's older DDR3-1600 C7 1.65V stuff, but I was only running it at rated frequencies. I'll do more playing tonight, time permitting.
post #467 of 67002
Quote:
Originally Posted by ryboto View Post

PD doesn't have RCM.

"Piledriver x86 cores use a new resonant clock mesh technology developed by Cyclos Semiconductor, which allows to cut power consumption by 10%, or boost clock-speed by 10% (compared to Bulldozer) without increase of TDP."

They say 10%. But actual testing on Watt usage under full load shows almost 30% compared to Bulldozer

Link
Edited by ComputerRestore - 10/25/12 at 7:53am
post #468 of 67002
The UPS guy is an hour late, this is killing me. mad.gif
Gaming n' Stuff
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570K Gigabyte Z77 Gigabyte GTX 970 Windforce 3X 16GB DDR3 1600MHz 
Hard DriveCoolingOSMonitor
90GB Corsair SSD + 2TB Raid Corsair H100 Windows 8.1 2x Asus PA248Q 
KeyboardPowerCaseAudio
Razer Blackwidow Ultimate SeaSonic X-1250 HAF 932 Beyerdynamic DT-990 600ohm w/ Soundblaster ZX 
  hide details  
Reply
Gaming n' Stuff
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570K Gigabyte Z77 Gigabyte GTX 970 Windforce 3X 16GB DDR3 1600MHz 
Hard DriveCoolingOSMonitor
90GB Corsair SSD + 2TB Raid Corsair H100 Windows 8.1 2x Asus PA248Q 
KeyboardPowerCaseAudio
Razer Blackwidow Ultimate SeaSonic X-1250 HAF 932 Beyerdynamic DT-990 600ohm w/ Soundblaster ZX 
  hide details  
Reply
post #469 of 67002
Quote:
Originally Posted by Raven.7 View Post

The UPS guy is an hour late, this is killing me. mad.gif

#firstworldproblems
post #470 of 67002
Quote:
Originally Posted by Raven.7 View Post

The UPS guy is an hour late, this is killing me. mad.gif

At least you didn't get a failed delivery sticker like some people.. sad-smiley-002.gif
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › [OFFICIAL] FX-8320/FX-8350 Vishera Owners Club