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Gts 450 ddr5 1gb OR gt240 ddr5 1gb

Last response: in Graphics & Displays
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April 26, 2011 6:13:34 PM

hi guys,
i need some advice as I am planning to buy a new graphic card to play the... Resident Evil 5 and DIRT3..
I am considering two cards GTS450 DDR5 1gb OR GT240 DDR5 1gb. the only reason i am considering the gt240 is because of the low power draw and also as per the specs of my PSU extreme power plus 500w. as the 12v has 18a current and the gts450 needs min 12v/22a. now the psu has dual 12v connectors making it more than 22a in total and i done know what that actually means as it was told to me by my friend..however i am not sure if this will work out as i dont want to create a problems for my graphic card.

The PSU specs :


The pc Specs :
Operating System : MS Windows 7 Ultimate 32-bit
CPU : Intel Core 2 Duo E7500 @ 2.93GHz
RAM : 4.0GB Dual-Channel DDR2 (5-5-5-15)
Motherboard : Gigabyte Technology Co., Ltd. G41M-Combo (Socket 775)
Graphics : BenQ E2200HD (1920x1080@60Hz)
512MB GeForce 8400 GS
Hard Drives: 488GB SAMSUNG SAMSUNG HD502HI ATA Device (SATA)
Audio : SRS Audio Sandbox (WDM)

Thanks
leonkennedy_7 :non: 
a b U Graphics card
April 26, 2011 6:22:07 PM

you're absolutely fine to get either card. 500w is more than enough for either of those cards. the 450 comes with an adapter that lets you use a 4pin connector if you dont have a 6 pin. i've run a 450 on a 350 watt power supply off a 4 pin connector. so yeah, you're absolutely fine.
a c 173 U Graphics card
April 26, 2011 6:24:23 PM

Just get the gts450 and you have enough power for such a setup.
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April 26, 2011 6:34:43 PM

sounds great...thanks guys.. wil be buying the gts450 tomorrow.. dont want t o miss out on dx11 goodies.

thanks again for reply
a c 125 U Graphics card
April 26, 2011 6:50:56 PM

You might consider checking 5770 prices as I've found it to be slightly cheaper than a 450 and it performs better.
April 26, 2011 6:51:22 PM

i need to know if my current cpu mobo combo will create a bottleneck for gpu.should i consider overclocking my cpu..


Thanks
a c 125 U Graphics card
April 26, 2011 7:05:47 PM

No the CPU is fine for these GPUs. You could stick a fairly good GPU in there without any real issues in most games, but there are a few very CPU intensive games... still, with these GPUs it won't be an issue.
April 26, 2011 7:11:38 PM

thanks for the reply. well i dont plan to play Crysis 2 or metro2033 but i am all excited to finally play resident evil 5 without the slow motion video.

a c 125 U Graphics card
April 26, 2011 7:22:14 PM

I know for sure RE5 can be CPU bottlenecked, but it should be fairly high. I don't know how it scales with CPU cores, but in running benchmarks the FPS difference between a single 5850 and CF 5850s was like 5fps (120, 125) due to a CPU bottleneck... but obviously that's still very high. I'm sure your CPU can handle at least 80+ FPS so it should still be GPU bound.

Anyway have fun!
April 26, 2011 7:28:26 PM

thanks. that will be all. got answers for all my questions today.. how do i close the thread ?
a c 125 U Graphics card
April 26, 2011 7:36:33 PM

You should be able to "select best answer" on whoever you want's post and it will be marked as "solved" then a mod will lock it.
April 27, 2011 4:12:41 AM

opexx said:
you're absolutely fine to get either card. 500w is more than enough for either of those cards. the 450 comes with an adapter that lets you use a 4pin connector if you dont have a 6 pin. i've run a 450 on a 350 watt power supply off a 4 pin connector. so yeah, you're absolutely fine.



this is the best answer dude..
a c 172 U Graphics card
April 27, 2011 4:29:56 AM

Here is a review of your PSU.

http://www.hardwaresecrets.com/article/Cooler-Master-eX...

They were able to pull 252W out of the 12V rail before it failed. This gives you 21A. You can probably safely pull another amp out of it, though the ripple will be very high. (It's not a 500W unit, its a 450W at best.) The GTS450 will probably work, but at $99 after rebate the 5770 is a better deal.

http://www.newegg.com/Product/Product.aspx?Item=N82E168... (cheapest 5770)

April 27, 2011 4:53:01 AM

4745454b said:
Here is a review of your PSU.

http://www.hardwaresecrets.com/article/Cooler-Master-eX...

They were able to pull 252W out of the 12V rail before it failed. This gives you 21A. You can probably safely pull another amp out of it, though the ripple will be very high. (It's not a 500W unit, its a 450W at best.) The GTS450 will probably work, but at $99 after rebate the 5770 is a better deal.

http://www.newegg.com/Product/Product.aspx?Item=N82E168... (cheapest 5770)



so should i buy 5770. the gts450 seemed a better buy to me and also because i was going to buy a another one in few months and get SLI done as i have an intel chipset. ofcourse i will upgrade my psu then, and what does the high ripple mean ?
a c 125 U Graphics card
April 27, 2011 5:05:18 AM

5770 is better than a 450, BUT, if you already plan to CF/SLI your cards then I encourage you to just wait and buy a single better card. Two 5770s barely outperform a single 5850 which you can get for $150 right now (Sapphire 5850 Xtreme).

A 5830 for $105 is a pretty sick deal too.
a c 172 U Graphics card
April 27, 2011 5:25:47 AM

Quote:
the gts450 seemed a better buy to me and also because i was going to buy a another one in few months and get SLI done as i have an intel chipset.


Does your Intel Chipset even support SLI? Most of them support CF, only a few support SLI.

Quote:
what does the high ripple mean ?


Because they wrote fail it means the ripple went above ATX specs. (600mv if my math and memory are right.) There is always some fluctuation in the voltage provided. You don't always get 12V exactly. ATX specs say you are allowed 5%, or .6V. When they say fail, they mean that the ripple, or bouncing above/below the 12V mark exceeded this .6V. I would not run a PSU like that as it causes extra wear and tear on the computer parts.
April 27, 2011 5:31:03 AM

to know more about the power supply guys will the lower amps on my psu cause problems while playing games on either ati or nvidia cards. i want to be able to play games with fairly good frame rates and with normal level details. i dont plan to overclock any of the components..also i cant buy a new psu just now as i have already bought 3 new game dvds..LOL..
a b U Graphics card
April 27, 2011 5:57:53 AM

What your video card will need is 150W or something like that. NVidia posts this value in card specs. It's a bit tougher to find for Radeons. 18A on the 12V rail means 18A x 12V = 216W. So you're fine if you have two 18A rails. There's more complicated stuff like cross-loading, but in general a midrange graphics card is fine on a PSU with two 12V rails at 18A (from a decent manufacturer).

EDIT: More info. So that review showed that it could do 252W, not just 216W out of the 12V rail. That's the rail for your graphics probably. Most of the time the first 12V rail is dedicated to motherboard/cpu/molex. Your PSU will not handle crossfire or any graphics more powerful than a 5850/GTX 460 1GB. The 600W OCZ I linked will.
a c 172 U Graphics card
April 27, 2011 6:09:13 AM

Its easy enough to find the TDP when you read a review. Both the GTS450 and 5770 require just under 110W. (106 and 108 if I remember right.)

Quote:
So that review showed that it could do 252W, not just 216W out of the 12V rail. That's the rail for your graphics probably. Most of the time the first 12V rail is dedicated to motherboard/cpu/molex.


I'm not sure where you are going with this. The CPU/board will take whatever power they need. If you have a 95W CPU, you can safely figure ~10A or ~120W. Subtract this from the 252W leaving you 132ish Watts for the card and drives.
a b U Graphics card
April 27, 2011 10:53:07 AM

I was referring to his PSU label. It has two 12V rails. Each can provide 216W (252W). The physical wires from 12V rail one usually connect to the motherboard connector and CPU connector. That leaves 12V rail two's physical wires to be what has the 6-pin connector. I don't know where the 4-pin molexes and SATAS would typically be connected. This means that the CPU and the 6-pin connector can never be drawing from the same 12V rail.

So if you have 216W (because you really NEVER want to be drawing 252W from one of these rails), 95W goes to CPU, maybe 10W to mobo, 10W to HDDs, up to 75W to the PCI-e slot?, and that's all that's on that rail.

Then the other rail probably has the PCI-e connector (6-pins do 75W, 8-pins do 150W). Maybe it powers the PCI-e slot (which can do 75W), I dunno.

But that's more or less where I was going with that.
a c 172 U Graphics card
April 27, 2011 11:46:24 AM

I'm still not understanding so I'm not sure if you have the right idea or not. First, each rail by itself can output (18A * 12V) 216W, not 252W. The 252 number comes from the fact that the PSU can only provide that much power while staying in spec, and because it can't provide 18A to both rails at the same time. I will as always go back to my personal PSUs for the example.

My wife and I both run Antec EA500s. (Earthwatts series.) Hers is made by Seasonic, mine is the second generation made by Delta. They both can do 34A over the two 12V rails. Hers however has the OCP on each 12V rail set at 17A (17A + 17A = 34) while mine has the OCP set higher at 22A. In this case 22A + 22A = 34A, not 44A.

This is an issue many have because when they see 18A twice they think they can pull 18A out of both rails at the same time. You should see some language under the PSU chart saying something like "12v1 and 12v2 not to exceed 384W", or something like that.

I mention all this because you're talking about what gets hooked up to which rail. As I mentioned in the post above yours, it doesn't really matter. If your PSU and board take up X number of watts, you simply subtract that amount from the total you can possibly do. This is whats available to you. You shouldn't have to worry about where what is connected to where.
a b U Graphics card
April 27, 2011 12:19:55 PM

Oh, I misunderstood the 252W statement. I thought they tested individual rails in the review. I guess I kinda meant maximum theoretical it could pull if one rail could pull 252W. All I really meant was 18A + 18A should handle a GTX 450.

But to put it more directly...Thanks for your thorough explanation. It was much better than mine and addressed the fact that 18A + 18A may not equal 36A.

Also, it is worth noting that so long as it's a decent PSU manufacturer, it will supply the wattage on the label. But with some cheap PSUs, it can be impossible to draw the max wattage because it's split on several rails that cannot all be loading simultaneously. This can be true with good PSUs too, but to take care of this, a good PSU would have a max theoretical draw (all rails maxed) of maybe 25% more than it's rated for (800W PSU rated for 600W).

a c 172 U Graphics card
April 27, 2011 1:20:29 PM

They did test the rails individually, I added the two together to get the "total" output. When they tested the PSU at 100% they got even more then 252W out of it, but the ripple violated ATX specs. 252W was the best they could do and not have the PSU fail a standard. This is actually very bad because the PSU will output the power you want, but it will have so many spikes and lulls that it will damage your parts.
April 27, 2011 6:44:39 PM

hi guys, thanks for such an overwhelming response, however i didnt really understand much from last 4 posts, just to be sure, depending on my pc and psu specs should i go for the GTS450/ radeon 5750 or should i stick to my original choice of GT240..
a c 125 U Graphics card
April 27, 2011 6:51:13 PM

Any of these cards are fine with your PSU, honestly. GTS450 or 5770 would probably be best bang for the buck.
a b U Graphics card
April 27, 2011 9:22:59 PM

To be clear--a GT240 is not really a gaming card. It'll play most games on low settings only.

The 5830 was by far the best deal posted here (bang for your buck). You should've already bought it, especially since it didn't require a rebate. But it's sold out now.

Like 4745454b said, that PSU will damage your parts. That's why I posted an excellent $40 PSU.

The cards you're talking about will barely play Dirt 2. So I don't know how you're talking about Dirt 3 with them. Really, you should save up $140 and wait for a deal. Last week, you could get a 5850 for $140. And in the meantime, buy a PSU that can handle a real graphics card.
!