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470SLI or 480SLI differences? - Page 2

post #11 of 24
Quote:
Originally Posted by Draygonn View Post
When OC'ed heavily the 470's are within 10% of the 480's. So not worth the trouble unless you get killer deals on the 480's.
That's kind of a logically flawed argument, anyone who overclocks their 470 will just as likely overclock their 480, your argument is analogous to if I said a normal guy running as fast as he can is only a little bit slower than an Olympic sprinter when is isn't trying very hard.

That said, 470s in SLI are enough for any modern game, and even then at most single monitor resolutions it's a little overkill unless you like to put on insane amounts of AA.
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post #12 of 24
The lower temps and power consumption of the GTX 470 make it a better overclocker. I wouldn't even consider OCing a GTX 480 without water cooling.
post #13 of 24
Quote:
Originally Posted by Wulfgar View Post
The lower temps and power consumption of the GTX 470 make it a better overclocker. I wouldn't even consider OCing a GTX 480 without water cooling.
Do you own a 480? What evidence do you have that they don't overclock well? The 470s are just as hot as the 480s, their slightly lower TDP is offset by the fact that they use a much smaller heat sink.

I have two with fairly poor VIDS (1037 and 1050) with no space between the cards. When I had them in a mid tower case they reached 80s maximum in Crysis or 3DMark, now when I have them in a HAF X I get 72 degrees maximum. Both of these cases were when both cards are overclocked to 800 MHz on the core and 3950 on the memory chips. This is with a 27C ambient (78F).

Power consumption is not related to cooling. Assuming that a 480 uses 100W more than a 470 overclocked (which is being very generous), you are looking at about a 7 dollar increase in power costs per month if you have the card running 100% CPU utilization 24 hours a day.

The 470 was and is a good card but trying to justify that a lower specced card is somehow more powerful and a has a higher performance threshold is not an argument you can support.
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post #14 of 24
was on the same foot as OP..i went to do the 470 SLI..no regrets and at some point OCing the 470's can give almost same results as the 480's..

well there goes my 2 cents..
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post #15 of 24
Quote:
Originally Posted by TickleMeElmo View Post
That's kind of a logically flawed argument, anyone who overclocks their 470 will just as likely overclock their 480, your argument is analogous to if I said a normal guy running as fast as he can is only a little bit slower than an Olympic sprinter when is isn't trying very hard.

That said, 470s in SLI are enough for any modern game, and even then at most single monitor resolutions it's a little overkill unless you like to put on insane amounts of AA.
I was talking about both being overclocked. I don't make the one is overclocked while the other isn't statements that many seem to enjoy
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post #16 of 24
http://www.hardwareheaven.com/review...use-noise.html

Your 80 degrees temps in full load seem very unlikely in a mid-tower case (unless you run the fans at 100%). I get around 85 with a custom cooled GTX 470 with the fan speed on auto... The temps in the review I posted above are much closer to reality.

GTX 480 SLI used 200 more watts which means you need to change the power supply (extra $$$) + 98 degrees (almost threshold) at stock speeds. Unless you have an air conditioner blowing on those cards I doubt they'll withstand any OCing.

Also, in the same review the GTX 470 OCed much better.
Edited by Wulfgar - 3/13/11 at 9:50pm
post #17 of 24
I have already purchased a second 470, now all I need is another EK FC470 block
both cards will do 850mhz. core with 1.035 volts
I tested the second card as soon as I got it, but still have experianced the joys of SLIed 470's.
Bought the card for Crysis 2, ya game runs just fine on a single card, so much for that idea, thank you very much Mr. Yarli
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post #18 of 24
Quote:
Originally Posted by Draygonn View Post
I was talking about both being overclocked. I don't make the one is overclocked while the other isn't statements that many seem to enjoy
Clock for clock they are separated by about 10%, but in my experience the 480 seems to clock higher than the 470s, I could be mistaken though as most of my knowledge of the 470s comes from release reviews.

Quote:
Originally Posted by Wulfgar View Post
http://www.hardwareheaven.com/review...use-noise.html

Your 80 degrees temps in full load seem very unlikely in a mid-tower case (unless you run the fans at 100%). I get around 85 with a custom cooled GTX 470 with the fan speed on auto... The temps in the review I posted above are much closer to reality.

GTX 480 SLI used 200 more watts which means you need to change the power supply (extra $$$) + 98 degrees (almost threshold) at stock speeds. Unless you have an air conditioner blowing on those cards I doubt they'll withstand any OCing.

Also, in the same review the GTX 470 OCed much better.
Most if not all of those reviews of the early Fermi cards came with a BIOS that was consistently 5 or so degrees hotter due to a fan profile that only kicked up the fan after reaching ~90 degrees. Also most people who are overclocking are going to be running a custom fan profile 80 degrees would have been at about 90% fan speed.

200W used 24 hours a day is about 12 dollars a month, 200W used 8 hours a day (assuming you work 8 hours, sleep 8 hours and spend all your leisure time on the computer playing Furmark (which I hear is a wonderful game)) you would have about a 4 dollar increase month to month. Insignificant even if you are earning minimum wage.

Taking the review you gave the 480 in their review clocks about 5% higher than either of their sample 470s. Multiple this with the higher frame buffer, 32 more CUDA cores and additional ROP and you have about 15% higher performance. Also citing the review you sent, the 480s are only 1-4 degrees (this can be attributed to both the fact that the 480s are slightly hotter and the fact that there are VID and leakage inconsistencies between different cards). The 480s are also only .7 dB louder

http://www.hardocp.com/article/2010/...0_sli_review/7

HardOCP did not overclock their cards.

Temperatures showed no difference between the cards.

http://www.guru3d.com/article/geforc...-480-review/33

Guru3D obtained a 806 MHz clock on the GTX480. They managed a 726 MHz clock on the GTX470.

Stock framerates in BFBC for the 480 and 470 were 55 and 43 respectively, showing over 20% difference. While overclocked the difference widened to 62 and 51.

Their maximum temperatures showed a 1 degree difference.

There is a 3 dB noise differential.

http://www.anandtech.com/show/2977/n...h-the-wait-/19

Anandtech did not overclock their cards.

Temperatures in Crysis were 94 for the GTX480 and 93 for the GTX470. There was NO temperature difference under Furmark.

Noise showed a difference of 2.6 dB.

The performance difference in stock in Crysis Warhead was 45 fps vs 36 fps (a 23% difference).

Dig up any of the the release reviews or any reviews done since then and the 480 shows a clear advantage over the GTX470. With almost 10% more CUDA cores it would take a core clock of ~10% to offset the performance differential. You would need a 750-770 MHz GTX470 to match a stock GTX480. Furthermore reviews have shown that the GTX480 overclocks higher in absolute clocks (if not relative to stock performance) and that any temperature and noise differences between the two Fermi cards is insignificant bordering on negligible.
Edited by TickleMeElmo - 3/13/11 at 11:08pm
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post #19 of 24
I wasn't arguing about the performance of 470 vs 480. I was merely saying that the GTX 470 would overclock better. Clock for clock I would be surprised if the GTX 480 would not be faster giving its specifications.

I just wanna point out that the temperatures cannot be equal, it's impossible...Extra power consumption means extra heat so the GTX 480 will always be hotter.

If you check the forums most people reach 800MHz on the 470 (air cooling). That's a 200MHz increase from stock. Now there's a few things that will happen: power consumption will go up (probably reaching GTX 480 stock levels), temps will go up (again reaching GTX 480 stock levels) and the performance will probably be equal to a stock GTX 480. The biggest gain in this case is the money you save on both the cards and the cheaper PSU to power them.

Sure you can overclock the GTX 480 also I doubt it can go as far as 900MHz without watercooling. Already at 800MHz it would eat up more power and get higher temps than a GTX 470 at 800MHz.
post #20 of 24
Quote:
Originally Posted by Wulfgar View Post
I wasn't arguing about the performance of 470 vs 480. I was merely saying that the GTX 470 would overclock better. Clock for clock I would be surprised if the GTX 480 would not be faster giving its specifications.

I just wanna point out that the temperatures cannot be equal, it's impossible...Extra power consumption means extra heat so the GTX 480 will always be hotter.

If you check the forums most people reach 800MHz on the 470 (air cooling). That's a 200MHz increase from stock. Now there's a few things that will happen: power consumption will go up (probably reaching GTX 480 stock levels), temps will go up (again reaching GTX 480 stock levels) and the performance will probably be equal to a stock GTX 480. The biggest gain in this case is the money you save on both the cards and the cheaper PSU to power them.

Sure you can overclock the GTX 480 also I doubt it can go as far as 900MHz without watercooling. Already at 800MHz it would eat up more power and get higher temps than a GTX 470 at 800MHz.
What don't you understand, the GTX480 is not hotter in operation because its over an INCH longer and has a much LARGER heatsink, the GTX470 heatsink is significantly smaller than the 480's. They do not overclock better under water or under air, reviews have shown the the GTX480s consistently reach higher overclocks and this is supported by anecdotal evidence to.

I don't understand your fascination with the power difference, neither you nor I have solid numbers on how much these cards pull overclocked but I have shown that even a 200W increase in power does not amount to a significant power bill increase with normal usage. A 750W power supply will be able to power SLI470, a 850W will handle SLI480, there isn't a whole lot of price difference between power supplies with those ratings, we aren't talking about 500W vs 1200W power supplies here.
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