Overclock.net › Forums › Graphics Cards › AMD/ATI › crossfire effects on memory 5870E6
New Posts  All Forums:Forum Nav:

crossfire effects on memory 5870E6

post #1 of 11
Thread Starter 
hi,
i have a 5870 E6, and need more power,
if i was to crossfire it with another 5870, i have been told that it would reduce me to 1gb ram,
so would it? and would 1gb be enough for 5000x1440?


does anybody have a idea on when an E6 6xxx would be out that isn't a 6990
    
CPUMotherboardGraphicsRAM
intel i5 2500k  GA-Z68M-D2M r9 290 OCZ 4x2GB 
Hard DriveHard DriveCoolingOS
raptor Western Digital watercooled 7 
MonitorKeyboardPowerCase
3 dell 1920x1080 + 1440x900 dell stock corsair GS600 SG08 
Mouse
dell stock 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
intel i5 2500k  GA-Z68M-D2M r9 290 OCZ 4x2GB 
Hard DriveHard DriveCoolingOS
raptor Western Digital watercooled 7 
MonitorKeyboardPowerCase
3 dell 1920x1080 + 1440x900 dell stock corsair GS600 SG08 
Mouse
dell stock 
  hide details  
Reply
post #2 of 11
CF only uses the Vram on the smallest card.
So 1Gb + 2Gb = 1Gb.
I recently had to make a research (ask the forum ) on the same topic
http://www.overclock.net/ati/971879-...-use-vram.html

And no, this resolution is too high, 1Gb will choke.
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
post #3 of 11
Thread Starter 
that is crap, it should use the amount on the main card, but it looks like i'll be getting another 5870E6 or waiting to see what new 6xxx there are eye6
    
CPUMotherboardGraphicsRAM
intel i5 2500k  GA-Z68M-D2M r9 290 OCZ 4x2GB 
Hard DriveHard DriveCoolingOS
raptor Western Digital watercooled 7 
MonitorKeyboardPowerCase
3 dell 1920x1080 + 1440x900 dell stock corsair GS600 SG08 
Mouse
dell stock 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
intel i5 2500k  GA-Z68M-D2M r9 290 OCZ 4x2GB 
Hard DriveHard DriveCoolingOS
raptor Western Digital watercooled 7 
MonitorKeyboardPowerCase
3 dell 1920x1080 + 1440x900 dell stock corsair GS600 SG08 
Mouse
dell stock 
  hide details  
Reply
post #4 of 11
it would make it more complicated for the crossfire to have one vastly more powerful card, in terms of VRAM and clock speeds as the faster card would get choked up waiting for the slower card
     
CPUCPUMotherboardGraphics
Xeon x5650 Xeon X5650 EVGA Classified SR2 EVGA GTX 680 FTW 
GraphicsRAMHard DriveHard Drive
EVGA GTX 680 FTW 24 GB DDR3 1600Mhz C9 1 TB WD Black 1 TB WD Black 
Hard DriveHard DriveHard DriveHard Drive
1 TB WD Black 1 TB WD Black Kington Hyper X 3k 120GB OCZ Vertex 3 120GB 
OSPower
Windows 8 Cooler Master Silent Pro Hybrid 1050w 
CPUMotherboardGraphicsRAM
3930k Intel ES ASrock X79 Extreme4-m GTX 680 16GB 1600Mhz DDR3 
Hard DriveHard DriveOptical DriveCooling
240GB Samsung EVO SSD 2TB WD Green DVDrw Cooler Master Nepton 240m 
OSPowerCase
Windows 7 Ultmate Cooler Master VS550 Cooler Master Silencio 352 
  hide details  
Reply
     
CPUCPUMotherboardGraphics
Xeon x5650 Xeon X5650 EVGA Classified SR2 EVGA GTX 680 FTW 
GraphicsRAMHard DriveHard Drive
EVGA GTX 680 FTW 24 GB DDR3 1600Mhz C9 1 TB WD Black 1 TB WD Black 
Hard DriveHard DriveHard DriveHard Drive
1 TB WD Black 1 TB WD Black Kington Hyper X 3k 120GB OCZ Vertex 3 120GB 
OSPower
Windows 8 Cooler Master Silent Pro Hybrid 1050w 
CPUMotherboardGraphicsRAM
3930k Intel ES ASrock X79 Extreme4-m GTX 680 16GB 1600Mhz DDR3 
Hard DriveHard DriveOptical DriveCooling
240GB Samsung EVO SSD 2TB WD Green DVDrw Cooler Master Nepton 240m 
OSPowerCase
Windows 7 Ultmate Cooler Master VS550 Cooler Master Silencio 352 
  hide details  
Reply
post #5 of 11
Quote:
Originally Posted by Bradey View Post
that is crap, it should use the amount on the main card, but it looks like i'll be getting another 5870E6 or waiting to see what new 6xxx there are eye6
Why's it crap? It's more unfortunate that you didn't do the research. Each card renders alternating frames so the ram is mirrored for lack of a better word.
The 3930
(26 items)
 
Junior's 3930
(22 items)
 
DATA/HTPC
(20 items)
 
  hide details  
Reply
The 3930
(26 items)
 
Junior's 3930
(22 items)
 
DATA/HTPC
(20 items)
 
  hide details  
Reply
post #6 of 11
Thread Starter 
the ram is mirrored that is a good analogy,

i have done the research into how the card process the image, but i didn't find out how the ram works, and there are a few different type,


ATI CrossFire can be set to function in different modes.

Alternate Frame Rendering - Each frame is rendered by each GPU one after the other. For example, the first GPU will render all the even frames while the second GPU will render all the odd frames.

Supertiling Mode - Supertiling works by dividing the screen/frame into small squares of pixels and spreading them evenly to each GPU for processing.

Scissor Mode - In scissor mode the frame is split up into two pieces, depending on rendering effort. The two GPUs are given each half of the frame for processing.

Antialiasing - This increases the quality of the image instead of the rendering speed. You can enable up to 14x of antialiasing.
    
CPUMotherboardGraphicsRAM
intel i5 2500k  GA-Z68M-D2M r9 290 OCZ 4x2GB 
Hard DriveHard DriveCoolingOS
raptor Western Digital watercooled 7 
MonitorKeyboardPowerCase
3 dell 1920x1080 + 1440x900 dell stock corsair GS600 SG08 
Mouse
dell stock 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
intel i5 2500k  GA-Z68M-D2M r9 290 OCZ 4x2GB 
Hard DriveHard DriveCoolingOS
raptor Western Digital watercooled 7 
MonitorKeyboardPowerCase
3 dell 1920x1080 + 1440x900 dell stock corsair GS600 SG08 
Mouse
dell stock 
  hide details  
Reply
post #7 of 11
Quote:
Originally Posted by Bradey View Post
the ram is mirrored that is a good analogy,

i have done the research into how the card process the image, but i didn't find out how the ram works, and there are a few different type,


ATI CrossFire can be set to function in different modes.

Alternate Frame Rendering - Each frame is rendered by each GPU one after the other. For example, the first GPU will render all the even frames while the second GPU will render all the odd frames.

Supertiling Mode - Supertiling works by dividing the screen/frame into small squares of pixels and spreading them evenly to each GPU for processing.

Scissor Mode - In scissor mode the frame is split up into two pieces, depending on rendering effort. The two GPUs are given each half of the frame for processing.

Antialiasing - This increases the quality of the image instead of the rendering speed. You can enable up to 14x of antialiasing.
Great info there, rep+.

Are those settings configurable by the end-user, or are factory pre-selected?
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
post #8 of 11
So if I crossfired my 5770 with another identical, would I have 1GB or 2GB or VRAM?
Swag box m8
(13 items)
 
7 x BL460c
(6 items)
 
 
CPUMotherboardGraphicsRAM
2500K Asus P8P67 Sapphire HD 5770 2x8GB Corsair 1333MHz 
Hard DriveMonitorMonitorPower
Corsair Force 3 120GB Aoc F22S+ Aoc F22S+ Powercool 850W 80+ 
Case
NZXT Phantom 
CPUCPUMotherboardRAM
Xeon E5520  Xeon E5520  BL460c G6 12GB ECC DDR3 
Hard DriveOS
1TB of SAN Server 2008 R2 
  hide details  
Reply
Swag box m8
(13 items)
 
7 x BL460c
(6 items)
 
 
CPUMotherboardGraphicsRAM
2500K Asus P8P67 Sapphire HD 5770 2x8GB Corsair 1333MHz 
Hard DriveMonitorMonitorPower
Corsair Force 3 120GB Aoc F22S+ Aoc F22S+ Powercool 850W 80+ 
Case
NZXT Phantom 
CPUCPUMotherboardRAM
Xeon E5520  Xeon E5520  BL460c G6 12GB ECC DDR3 
Hard DriveOS
1TB of SAN Server 2008 R2 
  hide details  
Reply
post #9 of 11
Quote:
Originally Posted by overclocker23578 View Post
so if i crossfired my 5770 with another identical, would i have 1gb or 2gb or vram?
1 gig
Edited by ronnin426850 - 3/24/11 at 12:45am
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
post #10 of 11
Thread Starter 
By default either SuperTiling or Scissor modes are applied. Alternate frame rendering mode is used for applications identified in CATALYST A.I. (when enabled). When CATALYST A.I. is disabled, 16-pipe graphics processors running D3D applications are accelerated by supertiling mode (other configurations are accelerated by scissor mode). Super AA mode is enabled through the control panel.
    
CPUMotherboardGraphicsRAM
intel i5 2500k  GA-Z68M-D2M r9 290 OCZ 4x2GB 
Hard DriveHard DriveCoolingOS
raptor Western Digital watercooled 7 
MonitorKeyboardPowerCase
3 dell 1920x1080 + 1440x900 dell stock corsair GS600 SG08 
Mouse
dell stock 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
intel i5 2500k  GA-Z68M-D2M r9 290 OCZ 4x2GB 
Hard DriveHard DriveCoolingOS
raptor Western Digital watercooled 7 
MonitorKeyboardPowerCase
3 dell 1920x1080 + 1440x900 dell stock corsair GS600 SG08 
Mouse
dell stock 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › crossfire effects on memory 5870E6