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Amd R7 250X

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  • Graphics Cards
  • Graphics
  • AMD
  • Radeon
Last response: in Graphics & Displays
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February 18, 2014 8:09:50 PM

I am deciding to buy a AMD Radeon 7750 or AMD R7 250X, I am leaning more towards the AMD R7 250X as it is only $100 and is as powerful as a 7770. I believe they both run on 300 Watts, the only problem I have with the AMD Radeon R7 250X is that... I HAVE NO FRIGGEN CLUE ON HOW TO INSTALL A 6 PIN CORD!!! (Im freaking out because its really frustrating me...) I have no idea on how to install one, I dont want to destroy the computer or the graphics card. Can anyone help with this problem? -THANKS SO MUCH!!!

Links to the two graphics cards... AMD 7750 (http://www.amazon.com/gp/product/B009K274H6/ref=ox_sc_s...)

AMD R7 250X (http://www.amazon.com/dp/B00G8Y76P4/ref=wl_it_dp_o_pC_S...)

More about : amd 250x

a b U Graphics card
February 18, 2014 8:15:53 PM

If your PSU has 6-pin cables, those things are keyed and only go in one way so you should not be able to accidentally insert it backwards. If it does not, you will need a moles-to-PCIe adapter.

Alternately, you could buy a card based on Nvidia's just-announced 750Ti - they perform about on par with the 260X while using only ~60W... but they are expected to cost ~$150.
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February 18, 2014 8:35:15 PM

InvalidError said:
If your PSU has 6-pin cables, those things are keyed and only go in one way so you should not be able to accidentally insert it backwards. If it does not, you will need a moles-to-PCIe adapter.

Alternately, you could buy a card based on Nvidia's just-announced 750Ti - they perform about on par with the 260X while using only ~60W... but they are expected to cost ~$150.


I only have $170 on my amazon account, I am planning to order TitanFall soon and a graphics card. Can you please tell me how to install the moles-to-PCIe adapter? I have a bunch of 4 pin molex (Ask me for pictures if you'd like.) I have no idea what to do with them. Thanks again. (I can spend anything under $110.)
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a b U Graphics card
February 19, 2014 5:04:19 AM

The molex-to-PCIe adapter takes a pair of old-school Molex plugs and turns them into a 6-pin PCIe power connector. You should use a pair of Molex from different power cables coming from the PSU to spread current between the most wires possible. The connectors only fit one way (without using excessive force) so the rest of the procedure should be self-evident enough: plug things where they fit.

Getting Molex connectors to mate can be a little tricky since the pins and barrels sometimes aren't centered correctly to it may require multiple attempts.
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February 19, 2014 2:53:46 PM
a b U Graphics card
February 19, 2014 3:24:23 PM

Looks like your PSU is from the ATX 1.x spec with ~50% of its power on the 3.3/5V rails.

With only 180W max available on the 12V rail and an off-brand PSU for which no review appears to be available, you should probably stick to a GPU under 75W that does not require PCIe auxiliary power: after the CPU, HDD(s), fans and whatever else in your PC that might be drawing power from the 12V rail, there might not be enough left to reliably accommodate 75W for the GPU.

Unfortunately, you might want to add a PSU to your shopping list.
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February 19, 2014 4:02:25 PM

I thought this might happen... Can you please link a good power supply on amazon? (Preferably less than $50.) Can you also tell me how I can re-install it? (I am really worried that I will damage my whole computer while switching something.)
edit: Is it still possible I can run it? My biggest concern isn't the money but putting everything together so it can run properly.
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a b U Graphics card
February 19, 2014 4:31:14 PM

Almost any half-decent ATX 2.x PSU should get the job done for low-end graphics but a half-decent/good PSU will usually set you back at least $50.

Basically, you can pick almost anything from tiers 1-3 on the list below:
http://www.eggxpert.com/forums/thread/323050.aspx

Around $50, you can get the Corsair CX430v2 which is a common recommendation and has pretty good reviews:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
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February 19, 2014 4:37:12 PM

InvalidError said:
Almost any half-decent ATX 2.x PSU should get the job done for low-end graphics but a half-decent/good PSU will usually set you back at least $50.

Basically, you can pick almost anything from tiers 1-3 on the list below:
http://www.eggxpert.com/forums/thread/323050.aspx

Around $50, you can get the Corsair CX430v2 which is a common recommendation and has pretty good reviews:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...


My problem isn't the money, its installing the thing... There are hundreds of wires and I dont want to screw my computer up.
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a b U Graphics card
February 19, 2014 5:00:40 PM

You have a camera. Take pictures of everything you undo and then redo it with your new PSU.

As I said previously, all the connectors are keyed so inserting them in the wrong place will require substantial force.

The only connectors I would specifically worry about are the wafer SATA power connectors: those have a thin L-shaped connector and are somewhat flimsy. They should go in almost effortlessly so if your SATA connectors won't go in/out easily, double-check that they are lined up properly and do not have some sort of locking tab on them.

The rest may look like it is a ton of wires but all those wires go to maybe 5-6 connector strings so you only need to keep track of which connectors go where. That brings your "hundreds of wires" problem down to something like six cables to actually worry about: the main ATX connector (20-24 pins), the ATX12V connector (4-8 pins), the HDD and optical drive power connectors, the GPU's PCIe power cable and connector (new) and that's probably it... so that's five cables/connectors to keep track of.
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February 19, 2014 5:04:16 PM

Well, I barely ordered all of them. Thank you very much sir!
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