2x4890s @1.3875v Safe ?

Plug · Jul 17, 2009

Got both my Asus Refrence Jobbies at 1000core1100memory @1.3875v

everything seems stable and the temps are great.
im going to try and get the voltage down even more

what should i be aiming for for a 1000core voltage wize ?

1.35v ?

Reefer86 · Jul 17, 2009

i have mine set at 1.4375v and no problems. taken from the xfx black edition so all is good for me. as allways just watch your temps. either your very lucky or when you stress the card you might find it wont be stable. I messed around with the card loads and i found the most stable was just over 1.4v

1Kurgan1 · Jul 17, 2009

As long as temps are fine, I'm not sure what to tell you for voltage wise. But I always aim the lowest possible with stability. So even if your told 1.35v still if you can get lower than go for it, just make sure to put some stress on them and see if they are fine with it.

Tatty_Two · Jul 17, 2009

My card stocks at 1.4V and for benching I tweak it to 1.425V so yes it's safe if they are running cool under load, it's the VRM temps that you should probably be most concerned about, not the GPU temps. Just check the VRM temps in GPU-Z whilst stressing the GPU with OCCT GPU stress tests (or some other intensive proggie) then would you and let us know the temps.

Plug · Jul 17, 2009

thanks for the reply guys.

here is 30 minutes in crysis to show temps and what not
my fan never goes over 71% :eek:

and the temps look great i think i think anyway, also vrms..

1.3875v in bios, shows 1.39v in rivatuner..

Tatty_Two · Jul 17, 2009

That looks good :toast:

DrCrow · Jul 19, 2009

Hello
what is the highest standard heat can vrm take for ati hd4890?

aquax · Jul 19, 2009

did you flash the cards or you are using smartdoctor?

Plug · Jul 20, 2009

120c vrms can take higher but i wouldnt want to run them for long periods past 100c
keep them under 100c at all times.

and yes my cards are flashed with a custom job that i did.

i also added desktop core and memory higher aswell as blueray core and memory higher.

Tatty_Two · Jul 20, 2009

DrCrow said:
Hello
what is the highest standard heat can vrm take for ati hd4890?

I am not absolutely sure but I think it would be sensible to keep below 90C, I have seen a couple running in the 90's though.

aquax said:
did you flash the cards or you are using smartdoctor?

Me? Rivatuner Volterra voltage tweak.

DrCrow · Jul 20, 2009

Tatty_One said:
I am not absolutely sure but I think it would be sensible to keep below 90C, I have seen a couple running in the 90's though.
.

1.42V 1000MHz Gpu 1150Mhz mem, 2 hours Arm2 play max vrm temp 89 7/24 game play use . Thanks Tatty_One :toast:

System Name	5870 Xtreme Xfire System SpeC
Processor	Intel I7 920 @ 4.2 HT
Motherboard	Biostar Tpower X58
Cooling	Thermal Right Extreme 120 - Push Pull Config
Memory	3x2 Ocz Blades 7.7.7.21
Video Card(s)	2x Sapphire 5870 Xfire @1000/1300 \| PhysX 8800GTS
Storage	1TB Samsung F3 32 + 1TB Samsung F1 32 + 3x Misc HDD`s
Display(s)	24" Nec Multisync 24WMGX3 LCD
Case	Coolmaster Staker Monster Case Custom
Audio Device(s)	XFI Azuntech Prelude 7.1 HD
Power Supply	PC Power & Cooling 910w Monster Single Rail 75a Killer
Software	Windows 7 Ultimate Edition x64
Benchmark Scores	Vantage, 31k With PhysX

System Name	Betty The Dirty Dragon
Processor	AMD 8350 @4.8
Motherboard	ASUS sabertooth rev 2
Cooling	Watercooling - Swiftech GTZ - XSPC RS360 - XSPC RX120
Memory	8GB corsair vengeance cas 9
Video Card(s)	280x 1100core 1600 mem
Storage	240 gb ssd- 2 tb Storage
Display(s)	Samsung 24" 2433BW
Case	Corsair 650d
Audio Device(s)	Xfi Fatality Titanium Pro
Power Supply	XFX 850 fully modular
Software	Windows 7 Ultimate x64

System Name	My Comp \| Fiancees Comp
Processor	i7 5820k @ 4.6Ghz 1.285v\| i5 2500k
Motherboard	MSI x99 SLI Plus \| AsRock Z77 Pro 3
Cooling	Watercooled
Memory	16GB DDR4 2400 @ 2666 \| 12GB DDR3 1600
Video Card(s)	AMD R9 290x \| MSI 5850 OC
Storage	128gb SSD + 2x 2TB \| 2TB
Display(s)	Asus 27" LCD \| 25" Hanns G
Case	CM Storm \| CM Elite 430
Audio Device(s)	Creative Recon 3D PCIe
Power Supply	Enermax Galaxy 1250W \| Rosewill 630w
Mouse	Logitech G700s \| Logitech G100s
Keyboard	Logitech G901 \| Logitech G105
Software	Win 8.1 Ultimate x64 \| Win 8.1 Ultimate x64
Benchmark Scores	3D Mark - Fire Strike Extreme - 4403

Processor	Rocket Lake Core i5 11600K @ 5 Ghz with PL tweaks
Motherboard	MSI MAG Z490 TOMAHAWK
Cooling	Thermalright Peerless Assassin 120SE + 4 Phanteks 140mm case fans
Memory	32GB (4 x 8GB SR) Patriot Viper Steel 4133Mhz DDR4 @ 3600Mhz CL14@1.45v Gear 1
Video Card(s)	Asus Dual RTX 4070 OC
Storage	WD Blue SN550 1TB M.2 NVME//Crucial MX500 500GB SSD (OS)
Display(s)	AOC Q2781PQ 27 inch Ultra Slim 2560 x 1440 IPS
Case	Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s)	Onboard Realtek ALC1200/SPDIF to Sony AVR @ 5.1
Power Supply	Seasonic CORE GM650w Gold Semi modular
Mouse	Coolermaster Storm Octane wired
Keyboard	Element Gaming Carbon Mk2 Tournament Mech
Software	Win 10 Home x64

System Name	5870 Xtreme Xfire System SpeC
Processor	Intel I7 920 @ 4.2 HT
Motherboard	Biostar Tpower X58
Cooling	Thermal Right Extreme 120 - Push Pull Config
Memory	3x2 Ocz Blades 7.7.7.21
Video Card(s)	2x Sapphire 5870 Xfire @1000/1300 \| PhysX 8800GTS
Storage	1TB Samsung F3 32 + 1TB Samsung F1 32 + 3x Misc HDD`s
Display(s)	24" Nec Multisync 24WMGX3 LCD
Case	Coolmaster Staker Monster Case Custom
Audio Device(s)	XFI Azuntech Prelude 7.1 HD
Power Supply	PC Power & Cooling 910w Monster Single Rail 75a Killer
Software	Windows 7 Ultimate Edition x64
Benchmark Scores	Vantage, 31k With PhysX

2x4890s @1.3875v Safe ?

Plug

Reefer86

1Kurgan1

The Knife in your Back

Tatty_Two

Gone Fishing

Plug

Tatty_Two

Gone Fishing

DrCrow

aquax

New Member

Plug

Tatty_Two

Gone Fishing

DrCrow

System Name	Crow
Processor	Intel Core i5 8600K
Motherboard	MSI Z370 TOMAHAWK
Cooling	Hydro Series H110i 280mm Extreme
Memory	G.Skill Ripjaws V F4-3200C16D-8GVKB
Video Card(s)	Gigabyte GTX 1070 Ti WINDFORCE 8GB
Storage	Toshiba 256GB XG5 NVMe 2x WD 1TB
Display(s)	Acer XB240HBbmjdpr 24" 1ms 144Hz
Case	Fractal Design Define R2 XL (TPU Giveaway)
Audio Device(s)	CM Storm Sirus 5.1 Headset Logitech X540 5.1 Speakers
Power Supply	High Power 750W
Mouse	MSI Interceptor DS300
Keyboard	Logitech G105
Software	Windows 7 x64