PCI-Express Slot power?

newfellow · Sep 16, 2009

Well, I know all the GPUs nowdays uses their own 6/8-pin power connectors, but does the PCI-E slot itself give the card or generally use any power from motherboard?

Mussels · Sep 16, 2009

yes. upto 75W

hat · Sep 16, 2009

The PCI-E slot provides 75w, however when gpu's have external power connectors, the slot doesn't do much in the way of providing power.

FordGT90Concept · Sep 16, 2009

Every pair is an additional 25w. 6-pin = 75w, for example, in addition to the 75w slot power granting a maximum power draw of 150w for the entire card.

largon · Sep 16, 2009

If a PCIe card has an onboard power connector, be it 6pin or 8pin or both, then slot power is hardly used at all. Basically, those cards that have 6pin/8pin use PCIe slot power only to power the VRAM so the total draw from slot is usually 30W or so. HD4870X2 draws only about 45W from the slot.

jomjomjom5 · Oct 9, 2009

PCI Ex 16x Slot MaxPower = 75w. 6pin or 18pin is 12V line.If that have 20A in line(You must see A(Amp) at you PSU Spec).It will have MAX Power in line is 12V * 20A = 240W per one Slot(6 or 8 pin) .If your card require power at 120w.You must use one 6pin for card.(Pci = 75w + 6pin = 0 - 240w)

System Name	ID
Processor	Q9450 ~3.74Ghz
Motherboard	ASUS-P5E
Cooling	Air
Memory	G.Skill CL4-8GB
Video Card(s)	ATI/Geforce 5850/9800
Storage	A-lot
Display(s)	BenQ G2400WT
Case	900
Audio Device(s)	Shitty ASUS FX;P
Power Supply	OCZ GXS 850W
Software	-
Benchmark Scores	too many machines to spec

System Name	Rainbow Sparkles (Power efficient, <350W gaming load)
Processor	Ryzen R7 5800x3D (Undervolted, 4.45GHz all core)
Motherboard	Asus x570-F (BIOS Modded)
Cooling	Alphacool Apex UV - Alphacool Eisblock XPX Aurora + EK Quantum ARGB 3090 w/ active backplate
Memory	2x32GB DDR4 3600 Corsair Vengeance RGB @3866 C18-22-22-22-42 TRFC704 (1.4V Hynix MJR - SoC 1.15V)
Video Card(s)	Galax RTX 3090 SG 24GB: Underclocked to 1700Mhz 0.750v (375W down to 250W))
Storage	2TB WD SN850 NVME + 1TB Sasmsung 970 Pro NVME + 1TB Intel 6000P NVME USB 3.2
Display(s)	Phillips 32 32M1N5800A (4k144), LG 32" (4K60) \| Gigabyte G32QC (2k165) \| Phillips 328m6fjrmb (2K144)
Case	Fractal Design R6
Audio Device(s)	Logitech G560 \| Corsair Void pro RGB \|Blue Yeti mic
Power Supply	Fractal Ion+ 2 860W (Platinum) (This thing is God-tier. Silent and TINY)
Mouse	Logitech G Pro wireless + Steelseries Prisma XL
Keyboard	Razer Huntsman TE ( Sexy white keycaps)
VR HMD	Oculus Rift S + Quest 2
Software	Windows 11 pro x64 (Yes, it's genuinely a good OS) OpenRGB - ditch the branded bloatware!
Benchmark Scores	Nyooom.

System Name	Starlifter :: Dragonfly
Processor	i7 2600k 4.4GHz :: i5 10400
Motherboard	ASUS P8P67 Pro :: ASUS Prime H570-Plus
Cooling	Cryorig M9 :: Stock
Memory	4x4GB DDR3 2133 :: 2x8GB DDR4 2400
Video Card(s)	PNY GTX1070 :: Integrated UHD 630
Storage	Crucial MX500 1TB, 2x1TB Seagate RAID 0 :: Mushkin Enhanced 60GB SSD, 3x4TB Seagate HDD RAID5
Display(s)	Onn 165hz 1080p :: Acer 1080p
Case	Antec SOHO 1030B :: Old White Full Tower
Audio Device(s)	Creative X-Fi Titanium Fatal1ty Pro - Bose Companion 2 Series III :: None
Power Supply	FSP Hydro GE 550w :: EVGA Supernova 550
Software	Windows 10 Pro - Plex Server on Dragonfly
Benchmark Scores	>9000

System Name	BY-2021
Processor	AMD Ryzen 7 5800X (65w eco profile)
Motherboard	MSI B550 Gaming Plus
Cooling	Scythe Mugen (rev 5)
Memory	2 x Kingston HyperX DDR4-3200 32 GiB
Video Card(s)	AMD Radeon RX 7900 XT
Storage	Samsung 980 Pro, Seagate Exos X20 TB 7200 RPM
Display(s)	Nixeus NX-EDG274K (3840x2160@144 DP) + Samsung SyncMaster 906BW (1440x900@60 HDMI-DVI)
Case	Coolermaster HAF 932 w/ USB 3.0 5.25" bay + USB 3.2 (A+C) 3.5" bay
Audio Device(s)	Realtek ALC1150, Micca OriGen+
Power Supply	Enermax Platimax 850w
Mouse	Nixeus REVEL-X
Keyboard	Tesoro Excalibur
Software	Windows 10 Home 64-bit
Benchmark Scores	Faster than the tortoise; slower than the hare.

System Name	Ladpot ◦◦◦ Desktop
Processor	R7 5800H ◦◦◦ i7 4770K, watercooled
Motherboard	HP 88D2 ◦◦◦ Asus Z87-C2 Maximus VI Formula
Cooling	Mixed gases ◦◦◦ Fuzion V1, MCW60/R2, DDC1/DDCT-01s top, PA120.3, EK200, D12SL-12, liq.metal TIM
Memory	2× 8GB DDR4-3200 ◦◦◦ 2× 8GB Crucial Ballistix Tactical LP DDR3-1600
Video Card(s)	RTX 3070 ◦◦◦ heaps of dead GPUs in the garage
Storage	Samsung 980 PRO 2TB ◦◦◦ Samsung 840Pro 256@178GB + 4× WD Red 2TB in RAID10 + LaCie Blade Runner 4TB
Display(s)	HP ZR30w 30" 2560×1600 (WQXGA) H2-IPS
Case	Lian Li PC-A16B
Audio Device(s)	Onboard
Power Supply	Corsair AX860i
Mouse	Logitech MX Master 2S / Contour RollerMouse Red+
Keyboard	Logitech Elite Keyboard from 2006 / Contour Balance Keyboard / Logitech diNovo Edge
Software	W11 x64 ◦◦◦ W10 x64
Benchmark Scores	It does boot up? I think.

PCI-Express Slot power?

newfellow

New Member

Mussels

Freshwater Moderator

hat

Enthusiast

FordGT90Concept

"I go fast!1!11!1!"

largon

jomjomjom5

New Member