4890 Mem Clock - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > New Systems | Building and Buying
Click Here to Login
Closed Thread
 
Thread Tools Display Modes
 
Old 05-23-2009, 05:34 PM   #1 (permalink)
True Techie
 
Join Date: Dec 2008
Location: Morris, IL
Posts: 178
Default 4890 Mem Clock

What should my memory clock speed be at? It says that its at 1045MHz
__________________

__________________

Core i7 920 DO
Silverstone 700W Modular
EVGA 570 GTX 800/1600
3x2GB G.Skill 2000Mhz
Gigabyte Ud7
Corsair 800D

Galaxy 460 GTX PPU
Inked is offline  
Old 05-23-2009, 09:38 PM   #2 (permalink)
Techie Beyond Description
 
veg1992's Avatar
 
Join Date: Dec 2006
Posts: 19,993
Default Re: 4890 Mem Clock

No that's right... that's exactly where its supposed to be..
__________________

__________________
I do not accept help requests and/or deleted threads/complaints by PM, Profile or IM/Email. Just ask on the forums! Also, I do have Lockerz invites if you want them, feel free to PM me your email if you want one :0

If I help you, or you just like what I said, rep me by clicking the
or under my avatar; it helps me know that my advice actually helped you.


.. But things don't go according to plan! My Actual Rig, 2009:
veg1992 is offline  
Old 05-24-2009, 11:51 AM   #3 (permalink)
True Techie
 
Join Date: Dec 2008
Location: Morris, IL
Posts: 178
Default Re: 4890 Mem Clock

Alright because I saw on Newegg that it was suppose to be 3.9GHz.
__________________

Core i7 920 DO
Silverstone 700W Modular
EVGA 570 GTX 800/1600
3x2GB G.Skill 2000Mhz
Gigabyte Ud7
Corsair 800D

Galaxy 460 GTX PPU
Inked is offline  
Old 05-24-2009, 11:53 AM   #4 (permalink)
Techie Beyond Description
 
veg1992's Avatar
 
Join Date: Dec 2006
Posts: 19,993
Default Re: 4890 Mem Clock

Hmm, looks like you don't know Effective/real clock speed is, I'll gladly explain it

Real clock is the 1045 you see in your program, effective is the 3.6ghz (because of the GDDR5 you multiply by 3. something).

It really runs at 1045, but its effectively 3.6ghz because of the GDDR5 (kind of like extra cores, when people who don't know any better multiply it)
__________________
I do not accept help requests and/or deleted threads/complaints by PM, Profile or IM/Email. Just ask on the forums! Also, I do have Lockerz invites if you want them, feel free to PM me your email if you want one :0

If I help you, or you just like what I said, rep me by clicking the
or under my avatar; it helps me know that my advice actually helped you.


.. But things don't go according to plan! My Actual Rig, 2009:
veg1992 is offline  
Old 05-24-2009, 12:05 PM   #5 (permalink)
True Techie
 
Join Date: Dec 2008
Location: Morris, IL
Posts: 178
Default Re: 4890 Mem Clock

Oh ok that explains a lot, thanks vernong. Rep for you.
__________________

Core i7 920 DO
Silverstone 700W Modular
EVGA 570 GTX 800/1600
3x2GB G.Skill 2000Mhz
Gigabyte Ud7
Corsair 800D

Galaxy 460 GTX PPU
Inked is offline  
Old 05-24-2009, 12:59 PM   #6 (permalink)
Lord Techie
 
gurusan's Avatar
 
Join Date: Jan 2006
Location: Portland, OR
Posts: 6,562
Send a message via MSN to gurusan
Default Re: 4890 Mem Clock

gDDR5 is actually QDR (quad data rate) so you multiply by 4. It looks like your card comes with a slight OC as its effective memory clock is 4180MHz
__________________
|| 2500K @ 5GHz 1 thread, 4.8 2 threads, 4.6 3, 4.5 4 1.284V ||
|| P8P67-M Pro || 8GB @ 2133MHz ||
|| 5850 @ 1000/1225 || XFX 650W || Silverstone FT03B ||
|| 37" LCD TV || CM Hyper 212+ || Samsung 2.1 Soundbar ||
gurusan is offline  
Old 05-24-2009, 02:02 PM   #7 (permalink)
Techie Beyond Description
 
veg1992's Avatar
 
Join Date: Dec 2006
Posts: 19,993
Default Re: 4890 Mem Clock

Quote:
Originally Posted by gurusan View Post
gDDR5 is actually QDR (quad data rate) so you multiply by 4. It looks like your card comes with a slight OC as its effective memory clock is 4180MHz
Didn't know that one.. thanks for the lesson
__________________
I do not accept help requests and/or deleted threads/complaints by PM, Profile or IM/Email. Just ask on the forums! Also, I do have Lockerz invites if you want them, feel free to PM me your email if you want one :0

If I help you, or you just like what I said, rep me by clicking the
or under my avatar; it helps me know that my advice actually helped you.


.. But things don't go according to plan! My Actual Rig, 2009:
veg1992 is offline  
Old 05-24-2009, 11:06 PM   #8 (permalink)
Master Techie
 
baron5's Avatar
 
Join Date: Feb 2007
Location: Australia
Posts: 2,984
Default Re: 4890 Mem Clock

yep, its similar to your RAM speed, for example when you buy ddr800 ram, really both modules are only at 400MHz but 800mhz effective, works the same way with your BUS speeds.
__________________

__________________
<<<Please give me Rep if I have helped you<<<

I7 930 @ 4GHz : Noctua D-14
Gigabyte X58A-UD7 : Asus GTX 480
G.Skill Trident 1600MHz 6-8-7-18 : Samsung F3 1TB
OCZ Vertex 2 50GB : Silverstone RV02 Case
Silverstone Strider Plus 1Kw : Sony DRU-870s Optical
Samsung P2350 Monito
r

baron5 is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Guide: Overclocking The i7 H4x3r Overclocking and Modding 17 05-13-2009 12:27 PM
Overlcocking the 4890 zmatt New Technology and Products 6 05-05-2009 10:32 PM
Sapphire Atomic HD 4890 Vapor-X Pictured 1Ghz Core 1050Mhz mem gurusan New Technology and Products 1 05-01-2009 05:42 PM
Ati Radeon HD 4890 and Radeon HD 4890 X2: Rumors from the Cebit thirdshiftdj New Technology and Products 2 03-10-2009 06:04 PM
Phenom clock for clock... LeftEyeBlind New Systems | Building and Buying 1 01-31-2008 01:37 PM



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 10:33 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.