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Adapter for graphics card power supply: SATA -> 6 pin PCI-E

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  • #1 16778036
    Loaderer
    Level 4  
    Posts: 142
    Rate: 22
    Hello, I need a specific answer.

    I bought a new card that needs 6PIN power

    or how do I buy a 6-pin sata adapter and plug in, everything will be ok? (they assure you that yes).

    Added after 35 [seconds]:

    Adapter for graphics card power supply: SATA -> 6 pin PCI-E

    This is something, only I took the more expensive RTV EURO AGD for certainty.

    Moderated By dt1:

    The link to the auction has been replaced with a picture of the item. Please do not post expiring links (the exception is "what to buy?" Section).

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  • #2 16778046
    lukasixthm
    Level 23  
    Posts: 599
    Help: 60
    Rate: 380
    Everything will work as it should.
  • #3 16778059
    Loaderer
    Level 4  
    Posts: 142
    Rate: 22
    One idiot told me that voltages may not be what it should be and that he will make me his cable for 110 zlotys (I don't know if to suggest it), it's probably a trickster. Others said that my Chieftec 650W easily has such a reserve of power that the card will wipe and it will be left 3 times, I think they are right.

    He's asking because I just wouldn't want to screw up an expensive card.
  • #4 16778088
    Kasek21
    Level 43  
    Posts: 45502
    Help: 4962
    Rate: 3503
    Everything will work.
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  • #5 16778339
    dt1
    Admin of Computers group  
    Posts: 47956
    Help: 7260
    Rate: 8185
    Loaderer wrote:
    One idiot told me that voltages may not be what it should be and that he will make me his cable for 110 zlotys (I don't know if to suggest it), it's probably a trickster. Others said that my Chieftec 650W easily has such a reserve of power that the card will wipe and it will be left 3 times, I think they are right.

    The guy wasn't an idiot, and you probably didn't listen to what he was saying.
    The efficiency of the SATA power plug is 1.5A per contact, the 12V voltage is divided into 3 contacts, the theoretical 12V performance is 4.5A, or 54W. If you connect a card on such a grommet that wants to eat 150W from this socket, it may turn out that the guest was not an idiot.

    Since no one knows what you want to power it with, it's hard to say if it will work well. A new graphics card is something that can charge 50W, and can download 250W.
  • #6 16778580
    Kasek21
    Level 43  
    Posts: 45502
    Help: 4962
    Rate: 3503
    What is this card exactly?
    What exactly is Chieftec 650W?
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  • #7 16779535
    Loaderer
    Level 4  
    Posts: 142
    Rate: 22
    I will say yes, my card is efficient on this connector and the temperature does not jump above 55 degrees no matter what load, is there anything to worry about? The card has been working stable for several hours.

    Another thing the guy in the computer told me that he supplies such an even better card and is peacefully enough for him, because the bandwidth of this adapter is 12V, besides I didn't take any shit because I took the one with better cables, thicker.

    Its safe? (Temperatures are very stable, no jumps)

    PS. Somehow you can check in the system how much voltage comes to this card?
  • #8 16779550
    perlit
    Level 39  
    Posts: 6368
    Help: 152
    Rate: 456
    Provide the graphics card model and the power supply model.
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  • #10 16779603
    Kasek21
    Level 43  
    Posts: 45502
    Help: 4962
    Rate: 3503
    After all, this power supply has a PEG 6pin connector (even two) so why do you need an adapter?
  • #11 16779608
    Loaderer
    Level 4  
    Posts: 142
    Rate: 22
    For the fact that I bought this computer with this power supply and this guy did not get these cables from the service and says that they are not there. You can look for such on the internet as you can find me, I put you a Coke whiskey. :D
  • #12 16779779
    dt1
    Admin of Computers group  
    Posts: 47956
    Help: 7260
    Rate: 8185
    1050Ti does not consume any large amounts of power, up to 75W in total, some of which probably by PCI Express. It should work on such a pass rather without major problems.
  • #13 16780067
    Loaderer
    Level 4  
    Posts: 142
    Rate: 22
    I think so too, I don't have a performance problem yet, the initial temperature is 30 degrees, the maximum temperature reaches 55, I heard that when there is a problem with the power consumption for the card, the performance is very limited, and temperature jumps are the norm in my the case is very stable. I don't think I have anything to worry about.
  • #14 16780279
    Kasek21
    Level 43  
    Posts: 45502
    Help: 4962
    Rate: 3503
    If you already have it and everything works, it will work.
  • #15 16780447
    Loaderer
    Level 4  
    Posts: 142
    Rate: 22
    Then the topic resolved, all my doubts were dispelled. :P
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Topic summary

✨ The discussion revolves around the use of a SATA to 6-pin PCI-E adapter for powering a new graphics card, specifically a Gigabyte GeForce 1050 Ti. Users confirm that the adapter will work, but caution is given regarding the power limitations of SATA connectors, which can provide a maximum of 54W. The Chieftec 650W power supply is mentioned as having sufficient capacity, with some users noting that the 1050 Ti typically consumes up to 75W, making it feasible to run on the adapter without issues. Concerns about power consumption and stability are addressed, with users reporting stable temperatures and performance. The conversation concludes with the author feeling reassured about the setup.
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FAQ

TL;DR: For low‑draw GPUs, a SATA→6‑pin can work because SATA 12V delivers ~54 W max; “The efficiency of the SATA power plug is 1.5A per contact.” [Elektroda, dt1, post #16778339]

Why it matters: It helps you avoid melted plugs, crashes, or buying unnecessary cables—especially when you just need to power a modest GPU.

Quick Facts

Is a SATA to 6‑pin PCIe adapter safe for powering a GPU?

It can be safe for low‑power GPUs if the adapter carries no more than about 54 W from 12V. SATA has three 12V contacts at 1.5 A each, so exceeding this risks hot plugs, instability, or connector damage. For cards needing much more power, use native PCIe leads. “The efficiency of the SATA power plug is 1.5A per contact.” [Elektroda, dt1, post #16778339]

Will a GeForce GTX 1050 Ti work with a SATA→6‑pin adapter?

Yes. The 1050 Ti draws up to 75 W total, with part supplied by the PCIe slot, so the adapter isn’t asked to deliver the full amount. As confirmed in the thread, this class of card “does not consume any large amounts of power,” and operation should be stable. [Elektroda, dt1, post #16779779]

My Chieftec 650W (CFT‑650‑14C) PSU—do I even need an adapter?

Probably not. That model includes two native 6‑pin PEG connectors. Use the PSU’s own PCIe leads whenever possible for the safest, coolest connection. If your unit is missing its modular cables, source proper replacements for that exact model. [Elektroda, Kasek21, post #16779603]

What happens if a GPU tries to pull ~150 W through a SATA adapter?

You risk overheated contacts, melted plastic, and shutdowns. SATA’s 12V path is about 54 W; forcing triple that through an adapter is unsafe. The post warning against feeding a 150 W load from SATA explains why the advice to avoid it was sound. [Elektroda, dt1, post #16778339]

How can I tell if my current adapter setup is stable?

Look for consistent temperatures, no throttling, and hours of error‑free gaming or benchmarks. In the thread, the card idled near 30°C and peaked around 55°C with stable performance, indicating adequate power delivery for that case. [Elektroda, Loaderer, post #16780067]

Can software show the exact voltage coming into the GPU power plug?

The thread did not confirm a reliable software readout for per‑plug voltage. Users judged stability by temperatures and performance instead. If everything works under load without crashes or throttling, it is generally acceptable for that setup. [Elektroda, Kasek21, post #16780279]

Do thicker adapter wires make it automatically safe?

Thicker wires help with heat and voltage drop, but they don’t change the SATA connector’s contact limit of about 54 W on 12V. Respect the connector rating first, then choose quality cables. Wire size cannot fix an overloaded plug. [Elektroda, dt1, post #16778339]

What is a PEG 6‑pin connector?

PEG 6‑pin is the standard 12V auxiliary GPU power plug from a PSU. In the discussed PSU, two such native 6‑pin leads are available, which are preferred over adapters. Use them when present for best reliability. [Elektroda, Kasek21, post #16779603]

I bought a used PC and the modular PCIe cables are missing. What should I do?

Avoid random custom cables. Get the correct PCIe leads for your exact PSU model, or replace the PSU if you cannot source them. As the OP noted, paying for a homemade cable offered at 110 zł wasn’t necessary once proper options were identified. [Elektroda, Loaderer, post #16778059]

Someone told me an adapter would be fine—can I trust that?

For low‑draw cards it often works, and forum replies confirmed success in this case. However, verify your GPU’s demand and the connector limits first. When in doubt, use the PSU’s native PCIe outputs. [Elektroda, lukasixthm, post #16778046]

What’s the practical maximum I should pull from one SATA power plug?

About 54 W on the 12V line. That comes from three 12V contacts at 1.5 A each. Staying within this keeps temperatures down and avoids browned connectors during sustained loads. [Elektroda, dt1, post #16778339]

How do I stress‑test after installing a SATA→PCIe adapter?

  1. Run a GPU stress or a demanding game for at least one hour.
  2. Watch temperatures and clocks; aim for consistent behavior (e.g., 30–55°C observed).
  3. Check for crashes, throttling, or artifacts; any of these means stop and re‑wire. [Elektroda, Loaderer, post #16779535]

Does a 650 W PSU guarantee the adapter will be safe?

No. Total PSU wattage doesn’t change the SATA plug limit. A strong PSU can still overheat a SATA connector if the GPU draws more than ~54 W from that path. Use native PCIe outputs when available. [Elektroda, dt1, post #16778339]

Is steady temperature a reliable sign of good power delivery?

It’s a good sign. In the thread, the GPU held a steady 30–55°C with no performance dips over hours, suggesting the adapter wasn’t overloaded. Always pair this with a visual check of the connector for discoloration. [Elektroda, Loaderer, post #16780067]

Bottom line: should I keep using the adapter if everything works?

If your GPU is low‑draw and testing shows stable temps and performance, you can keep using it. A forum responder closed with, “If you already have it and everything works, it will work.” [Elektroda, Kasek21, post #16780279]
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