ok, i have done a bit ocing, only memory, from 2000mhz to 26000mhz
Unigine benchmark settings:
GPU: 835MHz(default) Shaders: 1600MHz(default) Memory GDDR5:2000MHz (default)Code:Render: direct3d11 Mode: 800x600 8xAA windowed Shaders: high Textures: high Filter: trilinear Anisotropy: 16x Occlusion: enabled Refraction: enabled Volumetric: enabled Tessellation: normal
Results:
Code:FPS: 36.3 [B]Scores: 913[/B] Min FPS: 19.4 Max FPS: 80.4
GPU: 835MHz(default) Shaders: 1600MHz(default) Memory GDDR5:2600MHz (oced)
Code:FPS: 37.6 [B]Scores: 946[/B] Min FPS: 20.5 Max FPS: 85.8
I used msi afterburner to crank up mem to 2600mhz.
I tried to oc gpu core, but msi afterburner is limiting me to 540mhz, wierd....
so there you have it, 30% increase of mem freq. results only in 4% performance yield.
I wish i could oc gpu core to 900mhz, because at these setting temp was below 70C
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Am I right in thinking that the GDDR5 is only important at high resolutions i.e. 1080p? My new laptop's native res will be 1366x768. Bandwidth isn't as important at this resolution, am I right?
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Computer Games on Laptop Graphic Cards - Notebookcheck.net Tech
Judging from this a gt 650m will play every game you get at 720p at least 30fps and with aa turned down a little most games should play 60fps. -
Right. Assuming all other settings are the same, higher resolution = higher bandwidth usage.
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Meaker@Sager Company Representative
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Doing benchmark on FullHD while performing 10fps doesn't make any sense either, so maxed values like 8xAA and Anisotropy 16x impact bandwidth in adequate way for this kind of benchmark software.
Instead of writing *facepalm* comments, you could contribute with a valid suggestion how to improve testing, so all community would benefit. -
Please do another test with AA and Anisotropy off at same Res then two at a higher resolution (720 or 1080p) with AA/anisotropy on/off so we can be the judge of what really affects memory bandwidth. -
I am sorry if that has already been answered but I somewhere read that the GDDR3 version of the GT650M needs more power for the memory than the GDDR5 version. So, is that true and how much warmer will the GDDR3 version get compared to the GDDR5 version?
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No. If anything, it needs less power.
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Tinderbox (UK) BAKED BEAN KING
Has this been posted?
DDR3 Vs GDDR5 | Compare Processors
John -
Yes, (G)DDR3 consumes equal or less power compared to GDD5. Power consumption primaly depens on which manufacturing process the chips are made on. 32nm consumes more power than 22nm and so on.
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Okay, so are we in agreement that the GT 650M GDDR5 is best for 1080p and for resolutions lower than that the DDR3 memory would be a better option, for the price?
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gddr5 would be better for anything >900p, imo.
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DDR3 isn't better for anything, it just won't be as much of a bottleneck at 720p/768p.
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Tinderbox (UK) BAKED BEAN KING
If you look at the scores on the notebookcheck.net website for the 650m , i cannot really see that much of a difference between the GDDR3 and GDDR5 scores., in any benchmark.
NVIDIA GeForce GT 650M - Notebookcheck.net Tech
John. -
I am currently interested in a cheap laptop with a GT650M, only downside, it has GDDR3 memory. It's a Medion with a i7-3610QM and lots of other very good stuff compared to other equally priced laptops. I was planning on playing games like GTA IV. Is GDDR3 really worse for gaming in the native 768 resolution?
I now notice DDR3 is being discussed, are GDDR3 and DDR3 the same thing? -
They are not but in this case the difference is a typo as the GPUs don't use ddr3 but rather GDDR3.
At the native rez of 768p you will not see a difference that is not in the single digit percentages at that rez. The main advantage of GDDR5 is at 900p and higher resolution. If your gaming is typically done on a external monitor you may want a GDDR5 version but on such a low rez display the impact is not great. -
How do i know if i got GDDR5 or DDR3? On my laptop ive got a sticker saying Nvidia GeForce gt 650m 2gb...
But how do i know? -
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Just want to point out something where as DDR3 might use less power than GDDR5, then most DDR3 models are usually 2GB, and many GDRR5 model are only 1GB. Wouldn't be fair to say in this instance that DDR3 will use more power, powering larger amount of memory and/or chips?
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Sorry to bump but if anyone is still reading this....how would a GT 650M DDR5 compare with a newer 750M DDR3? I mean with 900p or 768p with medium (or high) settings without maxing out everything?
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GDDR5 >>> DDR3, just oc that 650M and you will have MUCH better performance.
GT650M DDR3 vs GDDR5 difference tested!
Discussion in 'Gaming (Software and Graphics Cards)' started by Supranium, May 12, 2012.