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2 ati radeon 5450 or 1 ati radeon 5750?

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February 19, 2010 2:29:16 AM

Aloha,
I am purchasing a new desktop with a core i5-750 processor on a gigabyte p55m-ud2 mobo and 8mb ram.
I'm an architect running Revit, a 3d modelling program. I don't do gaming.
Am thinking that 2 ati radeon 5450 cards vs. 1 ati radeon 5750 will be (for the same price), better for me as I can use 4+ monitors.
(currently use 2 19" monitors) I'm thinking that the extra speed in the 5750 will not make a difference for me? also, don't have a display port monitor, so would need a dongle if I were to get 1 more monitor. Any suggestions?

also, if I put my os and programs on a 64gig kingston ssd drive, with data stored on a 750gig 7,200rpm hard drive, do you think that will significantly improve performance over having the os, programs and data all on the 7,200rpm hard drive?
Thanks!
a b U Graphics card
February 19, 2010 2:36:31 AM

3D modeling programs benefit from more graphics power. I think your setup is fine the way it is. Would you find yourself using 4+ monitors for something you will do? The 5750 has 2 DVI, 1HDMI, and 1 DisplayPort. That's 4 monitors if ever you need it. I suggest you get just one 5750.

Yes, an SSD will improve the responsiveness (that means less loading time, waiting time) of your PC. Then you can have any mechanical hard drive hold your data.

PS. Get more RAM. 8MB won't get you anywhere. :) 
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a b U Graphics card
a b C Monitor
February 19, 2010 2:49:31 AM

The 5750 or all 5000 series cards can only support up to 3 monitors each not 4.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
this displayport to vga adapter will get the job done and is alot cheaper than those $100 dp to hdmi/dvi adapters.

for your 3d modeling programs I think you will benefit form a single faster graphics card over two smaller ones.

as for the ssd, the speed increase will only affect those programs that are fully installed on the ssd. if you install the 3d rendering program on the ssd it will run faster but if you save your data to your 7200rpm drive you wont gain to much performance.
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February 19, 2010 2:51:29 AM

I'd use 2-3 monitors for main program, other monitors for word, excel, etc.
i was leaning towards the 5750....

i was hoping the ssd would help speed things up as you suggest.

the extra ram looks like it would set me back an extra $1000 or so over the $1500 purchase price I'm looking at. can't afford that at this time.......
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February 19, 2010 3:14:17 AM

Windows 7, Revit, and all programs would be on the ssd drive.
was also thinking that the current file being worked on could be placed on the ssd, then after editing, and/or periodically save it to the 7200rpm drive. this should help with speed.
my projects are not very large, (5-25mb)
btw, the ati website under eyfinityshowed that 4 monitors could be set up on a single card.
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a b U Graphics card
February 19, 2010 3:21:25 AM

paperfox said:
The 5750 or all 5000 series cards can only support up to 3 monitors each not 4.


The reference 5000 series cards support only 3. However, Sapphire, XFX, and other subvendors' 5700 series cards have custom coolers which allow one additional DVI port to be on second PCI slot.

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a b U Graphics card
a b C Monitor
February 19, 2010 3:31:46 AM

It is my understanding that the 5700s and 5800s have four outputs and have allways had four. (my 5870 has four and i got that when it first came out last year). Unless ATI stealthfully enabled 4 monitor support on newer cards then I would still disagree with your statement.

EDIT: http://www.amd.com/us/products/desktop/graphics/ati-rad...
"ATI Eyefinity multi-display technology
Three independent display controllers
Drive three displays simultaneously with independent resolutions, refresh rates, color controls, and video overlays"

Even though these cards have 4 outputs, you can only use 3 of them for monitors at one time.
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a b U Graphics card
a b C Monitor
February 19, 2010 4:12:12 AM

I'm not completely sure how to explain that link. Either the 4 monitor Eyefinity if for when you have 2 cards in Crossfire or its only for the 6 MiniDisplayPort 5870 Eyefinity Edition, are my guesses.
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February 19, 2010 4:26:32 AM

I think the 2x2 setup is in crossfire, 2 monitors for each card
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a b U Graphics card
a b C Monitor
February 19, 2010 4:28:53 AM

you can only use a combination or 2 DVI ports and the display port or 1 DVI port, the hdmi port and the display port. But not all 4 at the same time. So if you plan on using all 4 monitors at the same time then the dual 5450 would be the better choice IMO. you can use all the DVI ports and you won't have to bother with those expensive active display port to DVI adapters.
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February 19, 2010 6:09:33 AM

supposedly, Revit does not rely heavily on the gpu, even when rotating models. that's why I was considering the two 5450 1gig cards instead of one 5750 1gig card, so long as performance is not decreased.
(I had an old 256k nvideo card in my recent cpu and the models would sometimes go into wireframe when rotating.
i like the idea of having more monitor space when working on projects...
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a b U Graphics card
February 19, 2010 6:15:58 AM

Okay then, it's practically done. 2 5450s and 2 more monitors for you.
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February 19, 2010 7:44:35 AM

By the way, TC, you don't actually need more RAM. I think the second poster was just kidding because of your typo. You wrote 8 MB, instead of 8 GB.

And 8 GB is more than enough. 8 MB, on the other hand would run CLI, with ease.
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February 19, 2010 8:09:12 AM

james coastn said:
Windows 7, Revit, and all programs would be on the ssd drive.
was also thinking that the current file being worked on could be placed on the ssd, then after editing, and/or periodically save it to the 7200rpm drive. this should help with speed.
my projects are not very large, (5-25mb).


Once the file is loaded into memory the disk shouldn't be a factor anyway until you want to save, a 25Mb file will only take seconds to load from a hard drive.
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a b U Graphics card
February 19, 2010 12:24:26 PM

carpenter20m said:
By the way, TC, you don't actually need more RAM. I think the second poster was just kidding because of your typo. You wrote 8 MB, instead of 8 GB.


YES!!! Someone understood!!! :) )

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February 23, 2010 10:07:57 PM

you guys are great!
Think I'll go with the two 5450's for now.
and try out the ssd with two raid 1 hdd's for data.
zoom, zoom!
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March 8, 2010 1:47:57 AM

guys.. just bougth the 5450.. with VGA,DVi and HDMI ports at the back, also i got HDMI2DVI connector. is this card able to support three displays as the one wide desktop??
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a b U Graphics card
a b C Monitor
March 8, 2010 2:11:56 AM

From what i could find on the XFX website, only the 5450 with the DisplayPort output supports Eyefinity. Also Ive looked at the HIS, Sapphire and ASUS 5450 versions with HDMI instead of DP and I could not find any mention of Eyefinity on their perspective manufacturer product pages.
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a b U Graphics card
a b C Monitor
March 8, 2010 2:24:44 AM

2 x DVI or HDMI + a VGA will support Eyefinity.
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!