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gtx775m 2GB vs gtx780m 4GB
- Thread starter Tjosansa
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I think I might finally have a new iMac that gives me a good jump in video performance. Currently I have the i5 with 6970 and it has served me very well. Was not wholly impressed with the graphics in the first gen slim line iMac but this one looks like another 3 year box.
I might be buying one soon i previously had a late 2009 model with the ATI radeon 512mb video card so a 4gb video card would be a huge jump for me, and the new fusion drive could not hurt.
If you were not impressed by last year's graphics, than you shouldn't be impressed with this year's one
Its only 10-15% faster after all.If you were not impressed by last year's graphics, than you shouldn't be impressed with this year's one
.. which is a lot in terms of GPU performance.
Oh, I totally agree, I was just puzzled by his/her choice of words ('not impressed with the graphics in the first gen slim line iMac') - given that the 'first gen slim line iMac' represented close to %100 jump in GPU performance (680MX vs 6970M).
Simple, we all know that first generation of any new model line is a "get it out the door" variety and real performance jumps occur in the second iteration.
As for the performance jump, when I did real world comparisons to my 6970 the numbers just were not there. I jump infrequently, having gone to the 6970 version after the 48xx series because all components were so much stronger.
4GB VRAM GDDR5 really starts to matter, the higher resolution you get into. In older notebook cards it was often a gimmick to have more Vram because the bus was so low it couldn't all be effectively used. GDDR5 is just that must faster.
I am not for certain but I think we will see a big difference in performance in demanding games like Battlefield 4 once we start going into 1080p and beyond resolution gaming. The sharper textures call for more video ram. That's at least how I have understood it.
I am not for certain but I think we will see a big difference in performance in demanding games like Battlefield 4 once we start going into 1080p and beyond resolution gaming. The sharper textures call for more video ram. That's at least how I have understood it.
If the bus is 265 -bit as it is in the GTX 780M, how much VRAM can you have until the bus is bottle-neck:ing t?
I am not sure matey, but the normal desktop 780 GTX, has a bus of 384-bit, with 3GB GDDR5.
Maybe that is telling. Looking forward to the benches!
No. The 775M is effectively the 680M (note the lack of an "X"), which is still a very good card.
This puts it about ~15% behind the 680MX from 2012.
The top-end 780M is a ~10% jump over the 680MX, but the added VRAM will help in a lot of very recent games with high texture memory demands.
Not sure how you figure... The 2012 iMac is a huge gaming upgrade over the 2011. The 2013 iMac is likely a small upgrade over the 2012. Don't regret getting a 2012 at all. Certainly not worth waiting a year for. Arguably the 2012 was a better deal, since it provided astonishing performance for the time. With the new desktop cards having come out since then, the 780M isn't as impressive.
And I think 4GB sounds a little gimmicky..
I bought the 27" with the upgraded video card September 11th, the day after Apple didn't announce any iMac upgrades at the iPhone roll out. (Why didn't they do it then and wait two weeks?)
Yesterday I found out about the new iMacs and immediately called to see if I could get an "exchange". I'd heard that there was a 14-day window to do that for new purchases. I was able to get a return on the older model. Apple says it's not an exchange, as I am simply returning my older model and re-purchasing (at my discretion) the new model.
The method for returns is pretty sweet. They'll email you a label to print and put on your packing boxes (I still had my originals). There's no charge for shipping. You just drop it off at the post office. I did that this morning, and this afternoon received an email from Apple saying they know the package is on the way and provided tracking information.
I was told by the Apple rep on the phone that it normally takes about 5 days for the charges to come off the credit card. Once that happens, I'm getting the latest and greatest. Can't wait.
Why's that? There are games and programs which love VRAMthe more you have, the better they'll run. Look at X-Planethere's a thread on MR where people are encouraged to get as much VRAM as they possibly can.
Possibly, most games can't use 4GB of VRAM yet, but that's no indication that they never will.
X-Plane is the only one I know of that easily exceeds 2 GB VRAM, and can top 3 GB VRAM even with texture compression "on".
I have once turned texture compression "off' on my 7950 with the grfx settings very high (NOT HIGHEST...!) and the game ate close to 6 GB VRAM....
I have a Mac Pro, 8 x 2.8, 16 GB, Radeon 7950 Mac, SSD and the CPU is the bottleneck regarding X-Plane 10.
Current settings with dense scenery with highly detailed planes, etc. HDR on and resolution @ 1920 x 1200 gets the VRAM usage around 2.4 GB.
I am so interested in the X-Plane results on the new maxxed out iMac.
Especially as nVidia drivers on OS X supposedly don't support "instancing" which results in poorer grfx performance in X-Plane 10... (?)
if x-plane 10 has mac client i can test it when my imac arrives but i think to take full advantage of the 780M we need Maveriks too
This the home of the only real flightsim:
http://www.x-plane.com/desktop/home/
And, of course, it has a Mac client (always has). You can get the demo here.
Hoping for full advantage by Mavericks too!