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Will a GTX1070 boot with a single 6-pin?

hihihi8
By hihihi8
in Graphics Cards
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Go to solution Solved by Tabs,

Short answer is no, unfortunately. One of the pins on a 6-pin connector is for ground sense, and two of the pins on an 8-pin connector are ground sense. If all sense lines aren't detected then the card won't POST.

 

Your PSU is theoretically capable of powering both cards so long as your load is low, but it's a dangerous situation to be in - if load spikes across both cards it could trigger OCP. That's unlikely however. Only being designed with one 6-pin connector means it may not be built internally for that amount of potential current to slow over the connector/cable. Be careful.

 

Does your motherboard have integrated DisplayPort? The built-in Intel GPU can power a 3440x1440 panel at 60Hz no problem. Actually, there's no reason your 750Ti can't either, you just have to make sure you don't use HDMI.

Posted

TLDR: will an evga 1070 sc black boot at all with only a 6pin connected instead of an 8pin?

 

 

Hi peeps, so I'm giving my old PC to my mom, which has an i5-4590, a 450W psu, a 750ti, 2 1080p screens, and a 60hz 3440x1440 ultrawide monitor.

 

The problem is, as it turns out, the 750ti has no means of supplying enough output bandwidth to saturate 3440x1440 at 60hz. So i decided to throw in a gtx1070 (evga sc black) thats been sitting around for ages. She doesnt game or anything, and im just throwing it in to utilize the triple monitor productivity potential and all, so the load on the gpu is going to be pretty much 0% all the time. 

 

However, the old 450w PSU i have only has a single 6pin pcie power cable, and the system isnt booting with that connected. I'm interested in knowing whether the card will boot at all with only a 6pin, or is it the card thats faulty?

 

note: based on reviews of the power supply, i can be 100% sure that it does indeed have enough “beef” on the dual 12v rails in order to power a gtx 1070 (with cpu) to more than 100% power, so psu isnt an issue.

 

note 2: i have no keyboard/mouse/IO at the moment, so that might be causing the no boot too...

 

PS: i've bought a 6pin to 8pin converter, which has yet to arrive.

 

any insight will be helpful, thanks!

PC 0: Pinky 2.0

Ryzen 9 5950x — 64GB G.Skill Ripjaws 5 @3600Mhz CL14-13-13-28-288 — ROG Crosshair 8 Dark Hero — RX 6900 XT — Hardline Loop — Sabrent Rocket 4.0 2TB — Samsung PM961 1TB — WD Blue 4TB HDD — Corsair AX1500i — Thermaltake Core P5 

 

PC 1: Pinky (Yes that is her name) Here's the build

Xeon E5-1680V3 — 64GB G.Skill Ripjaws 4 @2400Mhz — MSi X99A Godlike Gaming — GTX 980Ti SLI (2-WAY) — Hardline Loop — Samsung 950Pro 512GB — Seagate 2TB HDD — Corsair RM1000 — Thermaltake Core P5

 

PC 1.1: Pinky (Mom Edition) Here's the build

i7-5960X — 64GB G.Skill Ripjaws 4 @2400Mhz — MSi X99A Godlike Gaming — GTX 980Ti SLI (2-WAY) — Hardline Loop — Sabrent Rocket 3 1TB — Samsung Q 870 Evo 4TB — Corsair HX850i — InWin S-Frame #190

 

PC 2: Red Box/Scarlet Overkill (Dual Xeon)

Xeon E5-2687W x2 — 96GB Kingston DDR3 ECC REG @1333Mhz — EVGA Classified SR-X Dual CPU — GTX 1070 SLI (2-WAY) —Hardline Loop — Samsung 750 EVO 256GB — Seagate 2TB 2.5" HDD x3 — Self-Built Case

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1 minute ago, Joshcanread said:

would not attempt

tried already. wondering if its the card that died sometime during storage, or if the missing ground pins really matter

PC 0: Pinky 2.0

Ryzen 9 5950x — 64GB G.Skill Ripjaws 5 @3600Mhz CL14-13-13-28-288 — ROG Crosshair 8 Dark Hero — RX 6900 XT — Hardline Loop — Sabrent Rocket 4.0 2TB — Samsung PM961 1TB — WD Blue 4TB HDD — Corsair AX1500i — Thermaltake Core P5 

 

PC 1: Pinky (Yes that is her name) Here's the build

Xeon E5-1680V3 — 64GB G.Skill Ripjaws 4 @2400Mhz — MSi X99A Godlike Gaming — GTX 980Ti SLI (2-WAY) — Hardline Loop — Samsung 950Pro 512GB — Seagate 2TB HDD — Corsair RM1000 — Thermaltake Core P5

 

PC 1.1: Pinky (Mom Edition) Here's the build

i7-5960X — 64GB G.Skill Ripjaws 4 @2400Mhz — MSi X99A Godlike Gaming — GTX 980Ti SLI (2-WAY) — Hardline Loop — Sabrent Rocket 3 1TB — Samsung Q 870 Evo 4TB — Corsair HX850i — InWin S-Frame #190

 

PC 2: Red Box/Scarlet Overkill (Dual Xeon)

Xeon E5-2687W x2 — 96GB Kingston DDR3 ECC REG @1333Mhz — EVGA Classified SR-X Dual CPU — GTX 1070 SLI (2-WAY) —Hardline Loop — Samsung 750 EVO 256GB — Seagate 2TB 2.5" HDD x3 — Self-Built Case

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Short answer is no, unfortunately. One of the pins on a 6-pin connector is for ground sense, and two of the pins on an 8-pin connector are ground sense. If all sense lines aren't detected then the card won't POST.

 

Your PSU is theoretically capable of powering both cards so long as your load is low, but it's a dangerous situation to be in - if load spikes across both cards it could trigger OCP. That's unlikely however. Only being designed with one 6-pin connector means it may not be built internally for that amount of potential current to slow over the connector/cable. Be careful.

 

Does your motherboard have integrated DisplayPort? The built-in Intel GPU can power a 3440x1440 panel at 60Hz no problem. Actually, there's no reason your 750Ti can't either, you just have to make sure you don't use HDMI.

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Posted
8 minutes ago, Tabs said:

One of the pins on a 6-pin connector is for ground sense, and two of the pins on an 8-pin connector are ground sense. If all sense lines aren't detected then the card won't POST.

Not always. My old RX470 G1 Gaming boots with 1 6pin rather than an 8pin it's designed to use

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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1 hour ago, Tabs said:

Short answer is no, unfortunately. One of the pins on a 6-pin connector is for ground sense, and two of the pins on an 8-pin connector are ground sense. If all sense lines aren't detected then the card won't POST.

 

Your PSU is theoretically capable of powering both cards so long as your load is low, but it's a dangerous situation to be in - if load spikes across both cards it could trigger OCP. That's unlikely however. Only being designed with one 6-pin connector means it may not be built internally for that amount of potential current to slow over the connector/cable. Be careful.

 

Does your motherboard have integrated DisplayPort? The built-in Intel GPU can power a 3440x1440 panel at 60Hz no problem. Actually, there's no reason your 750Ti can't either, you just have to make sure you don't use HDMI.

thanks for the info! unfortunately the hardware im running is quite old, so the motherboard only has vga and hdmi. as for the 750ti, while the spec sheet given by asus says that the maximum digital resolution is 4096x2160, im assuming that is at 30hz, because the card only comes with a vga, 2 HDMI's, and a DVI-I dual link port.

 

As for the section of your reply referring to “both cards,” there is only one card in the system right now because there is only one pci-e connector (6p) in total. A review i've read tested the PSU's 12V rails to up to 550+W before triggering OCP, which is way more than a single 1070 and i5 could possibly draw under normal use. the official continuous rating of the 12V rail is 360W, which is also way above the 150W maximum power consumption reported by EVGA (and the 65 watts from intel). So I'm pretty sure im safe on the PSU side of things.

 

Well after some more fiddlin with the system, it does indeed output video, only for it to notify me of the lack of a sense cable...IMG_20180819_202556.thumb.jpg.2f45a598db98bf1c8f84bc9f37df5638.jpg

well then. mystery solved. i'll just wait for my 6pin-to-8pin converter then. Cheers and thanks to everyone who provided input!

PC 0: Pinky 2.0

Ryzen 9 5950x — 64GB G.Skill Ripjaws 5 @3600Mhz CL14-13-13-28-288 — ROG Crosshair 8 Dark Hero — RX 6900 XT — Hardline Loop — Sabrent Rocket 4.0 2TB — Samsung PM961 1TB — WD Blue 4TB HDD — Corsair AX1500i — Thermaltake Core P5 

 

PC 1: Pinky (Yes that is her name) Here's the build

Xeon E5-1680V3 — 64GB G.Skill Ripjaws 4 @2400Mhz — MSi X99A Godlike Gaming — GTX 980Ti SLI (2-WAY) — Hardline Loop — Samsung 950Pro 512GB — Seagate 2TB HDD — Corsair RM1000 — Thermaltake Core P5

 

PC 1.1: Pinky (Mom Edition) Here's the build

i7-5960X — 64GB G.Skill Ripjaws 4 @2400Mhz — MSi X99A Godlike Gaming — GTX 980Ti SLI (2-WAY) — Hardline Loop — Sabrent Rocket 3 1TB — Samsung Q 870 Evo 4TB — Corsair HX850i — InWin S-Frame #190

 

PC 2: Red Box/Scarlet Overkill (Dual Xeon)

Xeon E5-2687W x2 — 96GB Kingston DDR3 ECC REG @1333Mhz — EVGA Classified SR-X Dual CPU — GTX 1070 SLI (2-WAY) —Hardline Loop — Samsung 750 EVO 256GB — Seagate 2TB 2.5" HDD x3 — Self-Built Case

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  • 2 years later...
Posted

were you able to get it to work with the adapter?

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