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Does the MSI GTX 750ti OC need a PCIE power connector

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  • Power Supplies
  • Power
  • MSI
  • Graphics
  • Gtx
  • GPUs
  • Graphics Cards
Last response: in Graphics & Displays
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May 8, 2014 2:23:12 PM

Hi all,

I'm buying a new GPU in June and I have a question.

Does this card here:

http://www.msi.com/product/vga/N750Ti2GD5OC.html.

need a PCIE power connector?

I have tried to find an answer for ages by scouring reviews, articles and other threads but never got a conclusive answer. So does anyone know? I ask this since I have a PSU that doesn't have the connector available.

(and I seriously don't want to use a Molex to PCIE adapter since I hear they're very dangerous.) :ouch: 

Thanks.

More about : msi gtx 750ti pcie power connector

May 8, 2014 2:28:30 PM

750 ti OC'ed will almost definitely need a 6 pin connector hope this helps
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a b U Graphics card
May 8, 2014 2:28:36 PM

They run off just the mobo, from what neweggers say.

*It doesn't have a 6pin. I really wish they'd of shown that side of the card. -_-
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May 8, 2014 2:31:19 PM

So the over clocked version does need a 6pin
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a b U Graphics card
May 8, 2014 2:33:37 PM

renners said:
So the over clocked version does need a 6pin


Yea, no 6 pin connector. Check out the video on Newegg, they show a 360 of the card.
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a c 78 ) Power supply
a c 181 U Graphics card
May 8, 2014 2:33:46 PM

renners said:
So the over clocked version does need a 6pin


No, it doesn't.

"Pros: perfect for a budget build, it runs all the games ive tried so far on either ultra or high very smoothly. from insurgency to battlefield 4 this thing is pretty awesome. it also was more lower profile than some other cards and no need for pcie power slots either"

That's what the 'Neweggers say'
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a c 99 ) Power supply
a c 158 U Graphics card
May 8, 2014 2:34:10 PM

No PCI-E power connector required for this card.
Scroll to the bottom of the page in this article:
http://www.legitreviews.com/nvidia-geforce-gtx-750-ti-2...

Molex to PCI-E adapters aren't dangerous anyway. The issue with them is that if a power supply does not have enough PCI-E power connectors for your graphics card, it may mean the power supply does not have a sufficient +12V current rating to power this card. With a CPU up to 125W and the GTX 750 Ti, you require a 24A rating on the combined +12V rails.
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a c 149 ) Power supply
a c 244 U Graphics card
May 8, 2014 2:48:03 PM

No 6 pin

Look at nVidia's specs pages ...../ for whatever reason, cit and pastuing reverses what side of the = sign everything is on

GTX 760 - http://www.geforce.com/hardware/desktop-gpus/geforce-gt...
Quote:
Thermal and Power Specs:
97 C=Maximum GPU Temperature (in C)
170 W=Graphics Card Power (W)
500 W=Minimum Recommended System Power (W)
Two 6-pin=Supplementary Power Connectors


GTX 750 Ti - http://www.geforce.com/hardware/desktop-gpus/geforce-gt...
Quote:
Thermal and Power Specs:
95 C=Maximum GPU Tempurature (in C)
60 W=Graphics Card Power (W)
300 W=Minimum System Power Requirement (W)
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Best solution

a b U Graphics card
May 8, 2014 2:49:35 PM

According to this review, no connector is listed.

http://us.hardware.info/comparisontable/products/206763...

and according to Tom's Review (doesn't have one either)

http://www.tomshardware.com/reviews/geforce-gtx-750-ti-...

Best Luck

Share
May 8, 2014 2:50:14 PM

Oops got them mixed up
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a c 99 ) Power supply
a c 158 U Graphics card
May 8, 2014 2:58:26 PM

JackNaylorPE said:
No 6 pin

Look at nVidia's specs pages ...../ for whatever reason, cit and pastuing reverses what side of the = sign everything is on

GTX 760 - http://www.geforce.com/hardware/desktop-gpus/geforce-gt...
Quote:
Thermal and Power Specs:
97 C=Maximum GPU Temperature (in C)
170 W=Graphics Card Power (W)
500 W=Minimum Recommended System Power (W)
Two 6-pin=Supplementary Power Connectors


GTX 750 Ti - http://www.geforce.com/hardware/desktop-gpus/geforce-gt...
Quote:
Thermal and Power Specs:
95 C=Maximum GPU Tempurature (in C)
60 W=Graphics Card Power (W)
300 W=Minimum System Power Requirement (W)


The Nvidia reference GTX 750 Ti does not require a PCI-E power connector.
The MSI card N750Ti-2GD5/OC does not require a PCI-E power connector.
Some GTX 750 Ti cards from other manufacturers do require this connector though. These cards don't follow the reference design and may want to allow additional headroom for overclocking. An example is the Asus GTX750Ti-OC-2GD5.
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May 9, 2014 12:36:34 AM

Thanks for the help everyone! This card would be great for me then since my PSU doesn't have the connector. Maxwell cards are great imo, that you can get decent performance and an extremely cool running GPU without the use of a PCIE connector! :D 
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a c 149 ) Power supply
a c 244 U Graphics card
May 9, 2014 6:59:46 AM

VincentP said:
The Nvidia reference GTX 750 Ti does not require a PCI-E power connector.
The MSI card N750Ti-2GD5/OC does not require a PCI-E power connector.
Some GTX 750 Ti cards from other manufacturers do require this connector though. These cards don't follow the reference design and may want to allow additional headroom for overclocking. An example is the Asus GTX750Ti-OC-2GD5.


The card draws 92 watts , say 115 at max overclock.

A PCI-E 3 slot I think is more than capable of handling that load....... For years I have only recommended cards with non reference boards and beefed up VRMs.... one of the reasons I would never recommend a EVGA SC as the SC series used reference PCBs and the others (Giga, Asos, MSI used custom).

But many vendors with the 7xx series, even on the 780 Ti, are moving away from that practice for several reasons:

1. Unless the card is very popular, water block manufacturers have been cutting down on making WB's for custom PCBs
2. Nvidia's steps in preventing voltage increases above stipulated limits has reduced the *need" or reasoning behind custom PCBs and bigger VRMs.
3. Given the above, the cost / benefit ratio is no longer present as it once was.

That's one of my biggest disappointments with reviewers of late....while with the 5xx series, reviewers oft detailed the different PCB designs, now it's rarely if ever mentioned. Looking at the MSI's PCB for the 750 Ti, as far as I can tell it's a reference PCB in which case the nVidia reference specs apply.

What is really odd is, Asus still is using the custom PCB as with the 650 Ti with the extra power connector, yet didn't think well enough of their design to up the core past 1072 MHz and yet ...... MSI with the reference design and no power conenctor, went to 1085 which tells ya that the the card should be able to run on PCI-E slots w/o the need for a 6 pin connector.

With the PCBs for 7xx being basically revamped 6xx designs, m guess is Asus has plenty of the leftover custom PCBs around.

As for the PCI-E spec, I find it totally confusing in that the w/ PCI-E 3 ya supposed to get (slide 11):

http://www.pcisig.com/developers/main/training_material...

25 watts from edge connector
50 watts from each 2 x 3 connector
100 watts from each 2 x 4 connector

So max shud be 225 now (25 + 100 + 100)

And yet the cables are rated at 75 watts and 150 watts .... and the difference between the 6 and the 8 is two extra ground wires.

But yet we have cards drawing more than 300 watts. My Asus 780s are 254 watts at stock and they have a 2x4, 2x3 and edge connector....I'm reading 175 watts max per the PCI spec (25 + 50 + 100) and 250 per the cable spec (25 + 75 + 150) yet yet I pull close to a measured 300 watts OC'd.

And the 92 watt 750 stock reference card has no connectors so if slot limited to just 25 watts, where's the power coming from ? And yet the Gigabyte Windforce, a factory overclocked card tested out at just 90 watts and it does have the power connector. And they both overclocked just about the same amount

Reference 750 Ti - No power conenctor
92 watts - Core Clock: 1155 / 1376 Boost / Memory Clock: 6696 MHz

Windforce 750 Ti - w/ power Conenctor
90 watts - Core Clock: 1168 / 1293 Boost / Memory Clock: 6712 MHz

http://www.guru3d.com/articles_pages/nvidia_geforce_gtx...
http://www.guru3d.com/articles_pages/nvidia_geforce_gtx...

So if there's a reason why the Asus and Gigabyte cards need the power connector, I certainly can't say because it offers some benefit in overclocking....the overclocks were virtually identical....and note Guru3D's comments regarding the windforce w/ the power connector

Quote:
With the physical board power limit you are going see all cards roughly ending at this overclock and boost frequency.


I'd love to see someone do an updated article on the subject .... haven't seen one since 2009-10
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a c 99 ) Power supply
a c 158 U Graphics card
May 9, 2014 5:02:56 PM

Slide 11 is for initial power draw only.
Refer back to slide 8 for reference to the maximum power draw specification:
75W from x16 PCIe® connector plus 150W from a 2x4 connector plus 75W from a 2x3 connector

The HD 7990 is rated up to 375W. This is achieved with the PCI-E slot (75W) + two 8-pin connectors (150W each).

Improved VRM circuitry over the reference designs and additional provided power is not always to accommodate the factory overclock, but instead to allow headroom for the user to overclock.
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