GTX 970s can only use 3.5GB of 4GB VRAM issue - Page 18 - Overclock.net - An Overclocking Community

Forum Jump: 

GTX 970s can only use 3.5GB of 4GB VRAM issue

Reply
 
Thread Tools
post #171 of 2990 (permalink) Old 01-22-2015, 11:40 AM
Go Again!
 
Wirerat's Avatar
 
Join Date: Oct 2013
Location: 'MERICA
Posts: 5,621
Rep: 332 (Unique: 210)
Quote:
Originally Posted by specopsFI View Post

And what if the ultra-HD textures in SoM require more than 4GB of VRAM? As in something like the 6GB that it officially requires? That would put the blame not on the last 512MB of VRAM being slower but rather the full 4GB coming short of demand.

Also, I haven't seen full-proof evidence of the GTX 980 using more VRAM in the same scenario. There are screen captures that are said to demonstrate it, but many of those have different settings, different resolutions, different test setups... And yes, many of those have been proven to be false or misleading.

I know there are now a certain amount of people who scream for vengeance over this, but there is still nothing substantial in the proof department. Proof of this being an issue would be A) a somewhat plausible hypothesis of a possible root cause and/or B) a reputable 3rd party doing a test comparing a 980 and a 970 overclocked to the same general performance level, running several known VRAM heavy titles and recording frame times with both.
even if there is "proof" there is no way to know its not just a driver bug.

I wish one of the big reviewer sites would test the issue against a control group.

CPU
i9 9900k
Motherboard
Gigabyte z390 Aorus Pro
GPU
Msi 1080ti gaming x
RAM
Corsair DDR4 3000mhz cl 15
Hard Drive
Crucial MX500 500 gb
Hard Drive
Crucial MX500 1tb
Hard Drive
2tb WD 5400 rpm
Power Supply
Seasonic G-750
Cooling
EK XRES 140 DDC Top
Cooling
swiftech MCP-35X
Cooling
Gentle typhoon AP-15 X 3
Cooling
Be quite 140mm
Cooling
Nocuta 120mm Redux 1700rpm
Cooling
Bitspower DDC Heatsink Black
Cooling
Hardware Labs 240mm GTS
Cooling
EK Supremecy MX
Cooling
Ek 360mm pe rad
Cooling
Ek msi 1080ti gaming x waterblock
Case
Fractal Design R5
Operating System
WIN 10
Monitor
Acer XF250Q 240hz
Keyboard
G410 atlas
Mouse
G502
▲ hide details ▲
Wirerat is offline  
Sponsored Links
Advertisement
 
post #172 of 2990 (permalink) Old 01-22-2015, 12:01 PM
New to Overclock.net
 
mrkk's Avatar
 
Join Date: Jan 2013
Posts: 26
Rep: 6 (Unique: 6)
Quote:
Originally Posted by specopsFI View Post

There is zero evidence of that being the case. I've been keeping my eye on the forums here, Guru3D, Anandtech, geforce.com etc. and I've seen this speculation repeated many times, but nothing resembling evidence of it. Using settings that get you to 4GB VRAM usage are also settings that increase the complexity of the scene that the GPU is rendering which is the logical reason for diminishing performance.


You should ask Nvidia for the difference in the Nai benchmark. Last 500MB are much slower. There is a technical reason for this which a driver update cannot solve.


mrkk is offline  
post #173 of 2990 (permalink) Old 01-22-2015, 12:08 PM
New to Overclock.net
 
berbuzer's Avatar
 
Join Date: Jan 2015
Posts: 3
Rep: 0
Quote:
Originally Posted by mrkk View Post

You should ask Nvidia for the difference in the Nai benchmark. Last 500MB are much slower. There is a technical reason for this which a driver update cannot solve.



Wow...It seems it's hardware issue. Time to return my gtx.
berbuzer is offline  
Sponsored Links
Advertisement
 
post #174 of 2990 (permalink) Old 01-22-2015, 12:23 PM
Go Again!
 
Wirerat's Avatar
 
Join Date: Oct 2013
Location: 'MERICA
Posts: 5,621
Rep: 332 (Unique: 210)
Quote:
Originally Posted by berbuzer View Post

Wow...It seems it's hardware issue. Time to return my gtx.

The 980 being faster with a full frame buffer seems logical to me.

CPU
i9 9900k
Motherboard
Gigabyte z390 Aorus Pro
GPU
Msi 1080ti gaming x
RAM
Corsair DDR4 3000mhz cl 15
Hard Drive
Crucial MX500 500 gb
Hard Drive
Crucial MX500 1tb
Hard Drive
2tb WD 5400 rpm
Power Supply
Seasonic G-750
Cooling
EK XRES 140 DDC Top
Cooling
swiftech MCP-35X
Cooling
Gentle typhoon AP-15 X 3
Cooling
Be quite 140mm
Cooling
Nocuta 120mm Redux 1700rpm
Cooling
Bitspower DDC Heatsink Black
Cooling
Hardware Labs 240mm GTS
Cooling
EK Supremecy MX
Cooling
Ek 360mm pe rad
Cooling
Ek msi 1080ti gaming x waterblock
Case
Fractal Design R5
Operating System
WIN 10
Monitor
Acer XF250Q 240hz
Keyboard
G410 atlas
Mouse
G502
▲ hide details ▲
Wirerat is offline  
post #175 of 2990 (permalink) Old 01-22-2015, 12:24 PM
New to Overclock.net
 
Cyro999's Avatar
 
Join Date: Jan 2013
Posts: 10,755
Rep: 537 (Unique: 329)
My Dxdiag also does that - 4095MB on 32 bit, 3627 on 64-bit.

Where can i download that Nai benchmark?

I don't believe in "good enough"~!!

240hz / gsync / low persistence is AWESOME

post-flame-small.gif5 GHz Overclock Club post-flame-small.gif
Cyro999 is offline  
post #176 of 2990 (permalink) Old 01-22-2015, 12:25 PM
New to Overclock.net
 
Cyro999's Avatar
 
Join Date: Jan 2013
Posts: 10,755
Rep: 537 (Unique: 329)
Quote:
Originally Posted by Wirerat View Post



The 980 being faster with a full frame buffer seems logical to me.

Faster by an order of magnitude? Why, because it has 23% more smm? I don't see the logic, myself.

I don't believe in "good enough"~!!

240hz / gsync / low persistence is AWESOME

post-flame-small.gif5 GHz Overclock Club post-flame-small.gif
Cyro999 is offline  
post #177 of 2990 (permalink) Old 01-22-2015, 12:27 PM
New to Overclock.net
 
berbuzer's Avatar
 
Join Date: Jan 2015
Posts: 3
Rep: 0
Quote:
Originally Posted by Wirerat View Post



The 980 being faster with a full frame buffer seems logical to me.

Now I can see why my GTX970 stuttering when VRAM exceeds 3.5 GB.
berbuzer is offline  
post #178 of 2990 (permalink) Old 01-22-2015, 12:27 PM
Go Again!
 
Wirerat's Avatar
 
Join Date: Oct 2013
Location: 'MERICA
Posts: 5,621
Rep: 332 (Unique: 210)
Quote:
Originally Posted by Cyro999 View Post

Faster by an order of magnitude? Why, because it has 23% more smm? I don't see the logic, myself.
i just mean ratio wise. Why wouldnt the faster card slow down a little less percentage wise?

Unless its costing the card so much performance that it cannot use the vram there isnt an issue.

CPU
i9 9900k
Motherboard
Gigabyte z390 Aorus Pro
GPU
Msi 1080ti gaming x
RAM
Corsair DDR4 3000mhz cl 15
Hard Drive
Crucial MX500 500 gb
Hard Drive
Crucial MX500 1tb
Hard Drive
2tb WD 5400 rpm
Power Supply
Seasonic G-750
Cooling
EK XRES 140 DDC Top
Cooling
swiftech MCP-35X
Cooling
Gentle typhoon AP-15 X 3
Cooling
Be quite 140mm
Cooling
Nocuta 120mm Redux 1700rpm
Cooling
Bitspower DDC Heatsink Black
Cooling
Hardware Labs 240mm GTS
Cooling
EK Supremecy MX
Cooling
Ek 360mm pe rad
Cooling
Ek msi 1080ti gaming x waterblock
Case
Fractal Design R5
Operating System
WIN 10
Monitor
Acer XF250Q 240hz
Keyboard
G410 atlas
Mouse
G502
▲ hide details ▲
Wirerat is offline  
post #179 of 2990 (permalink) Old 01-22-2015, 12:31 PM
New to Overclock.net
 
criminal's Avatar
 
Join Date: Mar 2008
Location: Alabama
Posts: 10,717
Rep: 695 (Unique: 426)
Quote:
Originally Posted by mrkk View Post

You should ask Nvidia for the difference in the Nai benchmark. Last 500MB are much slower. There is a technical reason for this which a driver update cannot solve.



Wow, that is crazy.

I have a big bang house. I had all the materials for my new house brought in and dumped on a vacant lot. I took a stick of dynamite, lit the fuse on fire and tossed it into the pile of materials. BOOM went the explosion and when the dust settled I had a new house! Amazing isn't it?
Super P's Rig
(21 items)
Noahman
(9 items)
CPU
Ryzen 7 3700X
Motherboard
MSI MPG X570 GAMING PRO CARBON
GPU
Gigabyte RTX 2070S
RAM
XPG Spectrix D41 3600MHz
Hard Drive
Samsung 850 EVO
Hard Drive
MyDigitalSSD SBX
Hard Drive
WD Black 500GB NVMe
Power Supply
EVGA SuperNOVA 850G2
Cooling
Bykski CPU-XPR-AM
Cooling
Phobya Balancer 150 Reservoir
Cooling
XSPC EX280 Radiator
Cooling
TC-A - CPU Liquid Cooling Pump
Cooling
XSPC EX360 Radiator
Case
Phanteks Pro M TG
Operating System
Windows 10
Monitor
MSI Optix AG32CQ
Keyboard
G710+
Mouse
G305
Mousepad
Vipamz Extended XXXL
Audio
Sennheiser HD 439
Audio
Asus U7
CPU
5960X
Motherboard
Asus X99
GPU
MSI R9 380 Gaming
RAM
V-Color Skywalker 16GB 2666MHz
Hard Drive
Kingston SSDNOW V300
Power Supply
EVGA 500 W1
Cooling
CoolerMaster 120MM AIO
Case
Fractal Design Define S
Operating System
Windows 10 Pro
▲ hide details ▲
criminal is offline  
post #180 of 2990 (permalink) Old 01-22-2015, 12:47 PM
New to Overclock.net
 
mrkk's Avatar
 
Join Date: Jan 2013
Posts: 26
Rep: 6 (Unique: 6)
Quote:
Originally Posted by Cyro999 View Post

My Dxdiag also does that - 4095MB on 32 bit, 3627 on 64-bit.

Where can i download that Nai benchmark?

From Nai
http://www.computerbase.de/forum/showthread.php?t=1435408&page=2&p=16877818#post16877818


This is a CUDA based application and should work on any Kepler and Maxwell card. You might need cudart64_65.dll: https://mega.co.nz/#!Eh0GzT4D!Kjhqzljt-i-MtHV82ktDQ8RY002JT7VIhVNpUaVpN6U

Because this application runs in a window you have to either kill DWM or use your iGPU as primary GPU. Otherwise you possibly won't get the best result because desktop does use some VRAM.
mrkk is offline  
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Overclock.net - An Overclocking Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off