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Radeon 4890 Power Supply?

Last response: in Graphics & Displays
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January 12, 2012 1:36:12 AM

Would this power supply work for me?
http://www.tigerdirect.com/applications/SearchTools/ite...
I'll have a Radeon 4890 along with my AMD Athlon II X2 and 4gb of ram. Below is a link to my computer and the video card, if it helps.

http://www.bestbuy.com/site/Dell+-+Inspiron+Desktop+/+A...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

a b ) Power supply
a c 198 U Graphics card
January 12, 2012 1:40:10 AM

That will most likely work; there is more than 40 amps on the 12v rails, plenty enough to run a 4890.

Remember to activate the lifetime warranty on that sucker (I forgot)
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January 12, 2012 1:48:34 AM

So the 12v rails combine? I was confused about that. And another unrelated question, does this card require alot of ventilation?
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a b ) Power supply
a c 198 U Graphics card
January 12, 2012 1:54:09 AM

They more or less combine. In a stock Dell case, ventilation might be an issue, but I have a G92 GeForce GTS250 that runs really really really hot, so what I would do is get something like MSI Afterburner, which lets you control the fan speed on the card. It is also a 2 slot card, which helps ventilation.

Also, if you are that worried, you can just leave the side panel off of the case to allow for maximum ventilation.
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a b ) Power supply
a b U Graphics card
January 12, 2012 2:03:20 AM

That card isn't too hot. Even in a cramped case it will get in the 70s at most. It may heat up your other stuff if you don't have good ventilation.
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a b ) Power supply
a b U Graphics card
January 12, 2012 2:04:06 AM

It require considerable cooling. I have 3 of these... One setup on Antec 900 in crossfire, The 2nd setup on another Antec 900.

Here's the system requirement for it including power supply for your reference

http://www.amd.com/us/products/desktop/graphics/ati-rad...

You need at least 600W.
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a b ) Power supply
a b U Graphics card
January 12, 2012 2:06:47 AM

These card/GPU is design to run hot but its best you have adequate supply of fresh air. The hot air comes out at the end of the card at the end of the chassi.
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January 12, 2012 2:24:31 AM

As long as it doesn't overheat or mess up anything, I'll be fine haha
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a c 85 ) Power supply
a c 173 U Graphics card
January 12, 2012 2:26:28 AM

Deemo, not quite. It says "384W" under both 12V rails, so it can output 32A.

I vote you pass. That little red voltage switch screams old design. Old designs don't handle "modern" GPUs well. Try this one. It's even cheaper after rebate.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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January 12, 2012 2:31:41 AM

I'd say it would. Barely.
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January 12, 2012 2:39:09 AM

But that's only a 430 watt?
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a c 85 ) Power supply
a c 173 U Graphics card
January 12, 2012 6:15:46 AM

So? The total 12V output is very close. And its much more efficient then what that ultra can do.
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a c 85 ) Power supply
a c 173 U Graphics card
January 12, 2012 11:33:04 AM

You don't "need" a 500W PSU. AMD only says that because of all the junk/sub standard PSUs that are out there. The TDP of the 4890 is ~200W. Assuming a 95W quad CPU and system draw is ~350W. Cutting it REALLY close with that 430W, but it should be fine. It can output its rated power.
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a b ) Power supply
a b U Graphics card
January 12, 2012 11:41:39 AM

+1 AMD say 500W to allow for PSU manufacturers who label a PSU as 500W because thats the peak power while Antec rates theres at the continuous power. Also for modern GPUs the power supply should be able to supply 80% or more power to the 12V rail while a cheap 700W one I have can supply less than half of that to the 12V rails making it effectively for any useful purpose in a modern PC around a 350W PSU. Compare this to my Corsair TX750 750W which can supply 744W to the 12V rail.
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a b ) Power supply
a c 198 U Graphics card
January 12, 2012 11:09:49 PM

In that instance I would go with the CoolerMaster one over the DiabloTek one, Diablotek is not the best brand out there. It should be enough. The CX430 is also a good choice, one of the best out there.
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a c 85 ) Power supply
a c 173 U Graphics card
January 13, 2012 12:41:43 AM

+1 for the CM. NEVER buy a "PSU" with DiabloTek's name on it.
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January 13, 2012 1:03:44 AM

scm1994 said:
Would this power supply work for me?
http://www.tigerdirect.com/applications/SearchTools/ite...
I'll have a Radeon 4890 along with my AMD Athlon II X2 and 4gb of ram. Below is a link to my computer and the video card, if it helps.

http://www.bestbuy.com/site/Dell+-+Inspiron+Desktop+/+A...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...




Never liked Ultra power supplies but if the specs are correct than you have plenty of power. However that power supply only comes with 1 PCIe 6 pin connector. Your card uses 2. I know most cards come with Molex to PCIe adapters I just don't trust them.
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a b ) Power supply
a b U Graphics card
January 13, 2012 7:54:12 PM

woody213, I agree with distrusting them at first, but I've been using two of them on 1 rig and 1 of them on another, for over 1.5 years now, and no problems with GPUs or mobo. I'd like to know if there's some science to our distrust though.
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January 13, 2012 10:18:05 PM

So, I got the video card today, and slid it in my case just to make sure it fits. It was a tight fit, but it slid in there. However, my case is just a basic dell case, and for some reason, I wasn't able to secure the video card down. So would I be able to use the card even if it isn't secured down?
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January 13, 2012 11:28:57 PM

Nevermind, problem fixed.
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a b U Graphics card
January 13, 2012 11:34:54 PM

4745454b said:
You don't "need" a 500W PSU. AMD only says that because of all the junk/sub standard PSUs that are out there. The TDP of the 4890 is ~200W. Assuming a 95W quad CPU and system draw is ~350W. Cutting it REALLY close with that 430W, but it should be fine. It can output its rated power.


+1 totally agreed what AMD specifies is generally way over requirements but oftentimes you can get away with a quality lower wattage unit. For example I have a backup rig running a Antec Earthwatts 380w psu running an oc'ed p2 955 and and oc'ed 6850 without a hitch, it has a combined 28 amps on the 12v rail I believe, i just saying you cant go by what amd says
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January 17, 2012 4:22:08 PM

A 4890 can eat up to 370W on full load, and that's a reference model not an OC edition. I have a 500W powersupply and i am barely scraping through. I would reccomend at least a 550W.

Also tdp doesn't equal power consumption, a processor with a tdp of 125W for instance, like a X4 955 can use up to 250W under load and then you still need to compensate for usb devices, pci and pci-e cards, hdd's and opticals, case fans and memory modules.

Luckily my stider essentials 500W can withstand peaks up to 600W, otherwise i would be in trouble, but I am buying a 750W soon for crossfire. Running your PSU over its limits is not a good idea if you are doing it frequently.
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a b U Graphics card
January 17, 2012 5:01:42 PM

^lol "stider essentials", lol thats probably why you think you need a 550w psu, the unit you have sounds like a trash unit, so there you go, it further proves my point
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January 17, 2012 6:17:19 PM

lol its a silverstone, far from crap. can't believe you didn't even google that before commenting...
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a b U Graphics card
January 17, 2012 9:02:37 PM

oh silvertone, yes I stand corrected but you still wrote "Stider essentials" you mean strider!? ok yeah you have a solid unit, my bad, the 4890 is an incredible hog for the performance you get imo...

I can run a 6850 and an oc'ed 955 on a backup rig with a 380w antec earthwatts psu, no problem at all like I said before. AMD has come alone way with perf/watt since the 4XXX series

hell I run SLi gtx 560tis and an oc'ed 15-2500k on my XFX 650w XXX BE PSU which is made by seasonic, its true a 800W psu made by apevia would not be able to power my system
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a c 85 ) Power supply
a c 173 U Graphics card
January 17, 2012 10:44:47 PM

Quote:
A 4890 can eat up to 370W on full load


How do you figure? No way a single 4890 can use so much power.
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a b ) Power supply
a c 198 U Graphics card
January 17, 2012 10:57:07 PM

gungyoshi said:
A 4890 can eat up to 370W on full load, and that's a reference model not an OC edition. I have a 500W powersupply and i am barely scraping through. I would reccomend at least a 550W.

Also tdp doesn't equal power consumption, a processor with a tdp of 125W for instance, like a X4 955 can use up to 250W under load and then you still need to compensate for usb devices, pci and pci-e cards, hdd's and opticals, case fans and memory modules.

Luckily my stider essentials 500W can withstand peaks up to 600W, otherwise i would be in trouble, but I am buying a 750W soon for crossfire. Running your PSU over its limits is not a good idea if you are doing it frequently.


Not too many GPU's can say that they use up to 370W, and there is no way that a 4890 can use that much. I'm almost certain my 6950 unlocked to a 6970 doesn't even draw that much.

According to this chart, the 4890 doesn't draw more than 270 or so watts on load.

http://imageshack.us/f/718/gfxpowerchartbybrandgen.png/
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a c 85 ) Power supply
a c 173 U Graphics card
January 17, 2012 11:06:43 PM

After finally finding the 4890 on that chart it say top max draw off 217W. Still a bit higher then I would think but not horribly so. They had 2GB models OC'd that were up over 250W, but I've never seen a 4890 with a power draw that high.
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a c 277 ) Power supply
a c 196 U Graphics card
January 17, 2012 11:08:21 PM

gungyoshi said:
A 4890 can eat up to 370W on full load, and that's a reference model not an OC edition. I have a 500W powersupply and i am barely scraping through. I would reccomend at least a 550W.

Also tdp doesn't equal power consumption, a processor with a tdp of 125W for instance, like a X4 955 can use up to 250W under load and then you still need to compensate for usb devices, pci and pci-e cards, hdd's and opticals, case fans and memory modules.

Luckily my stider essentials 500W can withstand peaks up to 600W, otherwise i would be in trouble, but I am buying a 750W soon for crossfire. Running your PSU over its limits is not a good idea if you are doing it frequently.


Link me to a review that shows a 4890 using anywhere near that much by itself(here's a hint, there isn't one!)

You are reading the full system power consumption at the wall and misconstruing it to be the individual component of the review. My 955 and 4850 only pull 350 W from the wall total when loaded up with furmark and prime95 which means they are pulling only about 280 W from the PSU, so there is no way a 4890 could pull 370 W, and the fact that the PCI-e slot provides 75 W, the 6 pin connectors provide 75 W, and the 8 pin connector provide 150 W, so with only two 6 pin power connectors its not possible to make a card that consumes more than 225 W safely.

Read carefully, power consumption parts of reviews confuse most people.
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January 18, 2012 3:53:56 AM

hunter315 said:
Link me to a review that shows a 4890 using anywhere near that much by itself(here's a hint, there isn't one!)

You are reading the full system power consumption at the wall and misconstruing it to be the individual component of the review. My 955 and 4850 only pull 350 W from the wall total when loaded up with furmark and prime95 which means they are pulling only about 280 W from the PSU, so there is no way a 4890 could pull 370 W, and the fact that the PCI-e slot provides 75 W, the 6 pin connectors provide 75 W, and the 8 pin connector provide 150 W, so with only two 6 pin power connectors its not possible to make a card that consumes more than 225 W safely.

Read carefully, power consumption parts of reviews confuse most people.



Lol yes you are correct, sorry about that
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