GT650M DDR3 vs GDDR5 difference tested!

[Lancer91]

my response.. its a small decrease for diablo3 and other games are either net zero or large gains like batman arkham city. Download it and try it. Bench a few games on the old driver, save the figures in notepad or something, then download and try the new. Share results to compare with others. It helps everyone in the community. Good Luck!

[dado023]

ok, i have done a bit ocing, only memory, from 2000mhz to 26000mhz
Unigine benchmark settings:

Render:		direct3d11
Mode:		800x600 8xAA windowed
Shaders:	high
Textures:	high
Filter:		trilinear
Anisotropy:	16x
Occlusion:	enabled
Refraction:	enabled
Volumetric:	enabled
Tessellation:	normal

GPU: 835MHz(default) Shaders: 1600MHz(default) Memory GDDR5:2000MHz(default)
Results:

FPS:	36.3
Scores:	913
Min FPS:	19.4
Max FPS:	80.4

GPU: 835MHz(default) Shaders: 1600MHz(default) Memory GDDR5:2600MHz(oced)

FPS:	37.6
Scores:	946
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

[Cakefish]

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?

[nissangtr786]

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?

I think gddr5 and 256bit cards are more suited for 1080p but 128bit easily does 720p gaming especially a gt 650m.

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.

[R3d]

Right. Assuming all other settings are the same, higher resolution = higher bandwidth usage.

[Meaker]

ok, i have done a bit ocing, only memory, from 2000mhz to 26000mhz
Unigine benchmark settings:

Render:		direct3d11
Mode:		800x600 8xAA windowed
Shaders:	high
Textures:	high
Filter:		trilinear
Anisotropy:	16x
Occlusion:	enabled
Refraction:	enabled
Volumetric:	enabled
Tessellation:	normal

GPU: 835MHz(default) Shaders: 1600MHz(default) Memory GDDR5:2000MHz(default)
Results:

FPS:	36.3
Scores:	913
Min FPS:	19.4
Max FPS:	80.4

GPU: 835MHz(default) Shaders: 1600MHz(default) Memory GDDR5:2600MHz(oced)

FPS:	37.6
Scores:	946
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

Good to know 800x600 is not bandwdth limited by ddr3 *facepalm* i think we figured that out back in the 9800pro/5900ultra days.

[dado023]

Good to know 800x600 is not bandwdth limited by ddr3 *facepalm* i think we figured that out back in the 9800pro/5900ultra days.

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.

[Genoskia]

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.

Unfortunately I'm with the guy above your post... 800x600 isn't a great resolution to bench memory..... that doesn't mean your wrong though how about you prove what you just said to us as I'm very interested...

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.

[Hodor]

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?

[R3d]

No. If anything, it needs less power.