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Do i need a backplate for wc 6990

post #1 of 5
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hey guys, i have a sapphire 6990 and im going to wc cool it, im basically doing the following loop:

Rad 1-Swiftech MCR420-QP
Rad 2-xspc rs240
cpu-ek supreme hf (intel 2600k o.c to 5.0)
gpu-ek 6990 block
fans- gt ap 15
tube-i.d 1/2 o.d 3/4
pump- swiftech 655 (d5)

now i have a couple of questions.
1.im pretty sure that would be enough rad for a 2600k and a 6990 am i right?
2.would the gt ap15 be enough for those rads ? running at about 1400 rpms?
3.do i need a ek backplate with the blck installed or can i reuse the oem one?
4.do i need a pump top?

i am kind of on a tight budget =/ and need to spend as less money as possible.
The New Baby
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel core i7 2600k Asus Maximus IV Extreme Sapphire 6990 w. EK block G.SKILL Ripjaws X 1600 4gb 
Hard DriveOptical DriveOSMonitor
Vertex 3 MAX ED 120gb, Samsung f3 1tb Samsung BD Windows 7 64bit Dell u2410 and Samsung 32 inch for movies 
KeyboardPowerCaseMouse Pad
Logitech g19 Corsair hx1000 (replaced w. gt ap15) Haf X (white led lights)(480 rad and 240 mod) Ripper xxl 
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The New Baby
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel core i7 2600k Asus Maximus IV Extreme Sapphire 6990 w. EK block G.SKILL Ripjaws X 1600 4gb 
Hard DriveOptical DriveOSMonitor
Vertex 3 MAX ED 120gb, Samsung f3 1tb Samsung BD Windows 7 64bit Dell u2410 and Samsung 32 inch for movies 
KeyboardPowerCaseMouse Pad
Logitech g19 Corsair hx1000 (replaced w. gt ap15) Haf X (white led lights)(480 rad and 240 mod) Ripper xxl 
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post #2 of 5
No you don't need a back plate unless you are going for looks. All you need is the 420qp. Also there will be a shortage of gt fans if there isn't already.
Case Labs th10
(21 items)
 
   
CPUMotherboardGraphicsRAM
970 evga 4way 2 gtx590 6gigs muskin ram 
Hard DriveOptical DriveCoolingCooling
2tb wd,128 ssd/crucial lg dvd koolance gtx590 block x 2 white heatkiller 
CoolingCoolingCoolingCooling
RX480 rad x2 MCP35x (X2) gentle typhoons 1850 rpm (8) xigamtek fans  
OSMonitorKeyboardPower
win pro 64bit samsung 2343 x3 6144x1152 logitech g19 silverstone 1500watt 
CaseMouseMouse PadAudio
case labs th10 deathadder 3500dpi cheap one Creative Sound Blaster X-Fi Titanium Fatal1ty C... 
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XSPC dual bay reservoir  
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Case Labs th10
(21 items)
 
   
CPUMotherboardGraphicsRAM
970 evga 4way 2 gtx590 6gigs muskin ram 
Hard DriveOptical DriveCoolingCooling
2tb wd,128 ssd/crucial lg dvd koolance gtx590 block x 2 white heatkiller 
CoolingCoolingCoolingCooling
RX480 rad x2 MCP35x (X2) gentle typhoons 1850 rpm (8) xigamtek fans  
OSMonitorKeyboardPower
win pro 64bit samsung 2343 x3 6144x1152 logitech g19 silverstone 1500watt 
CaseMouseMouse PadAudio
case labs th10 deathadder 3500dpi cheap one Creative Sound Blaster X-Fi Titanium Fatal1ty C... 
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XSPC dual bay reservoir  
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post #3 of 5
Quote:
Originally Posted by ALAMO695 View Post
hey guys, i have a sapphire 6990 and im going to wc cool it, im basically doing the following loop:

Rad 1-Swiftech MCR420-QP
Rad 2-xspc rs240
cpu-ek supreme hf (intel 2600k o.c to 5.0)
gpu-ek 6990 block
fans- gt ap 15
tube-i.d 1/2 o.d 3/4
pump- swiftech 655 (d5)

now i have a couple of questions.
1.im pretty sure that would be enough rad for a 2600k and a 6990 am i right?
2.would the gt ap15 be enough for those rads ? running at about 1400 rpms?
3.do i need a ek backplate with the blck installed or can i reuse the oem one?
4.do i need a pump top?

i am kind of on a tight budget =/ and need to spend as less money as possible.
You need a biocide of some sort (either a killcoil or PT Nuke). That amount of rad should be sufficent to cool all that hardware. Pump tops for the MCP655 really don't do anything other than improve the looks or add a reservior. They don't help much with head pressure like the DDC / MCP 355 tops do. Backplates are for cosmetics only and if you don't want to pay $30 a pop for them, check EBay. I got 2 EK 580 backplates for $30 brand new. I haven't used those particular rads and fans, so I can't say if the cooling power of the fans would be OK or not.
post #4 of 5
You really don't need the backplate, BUT, keep in mind that the backplate is a memory heatsink and the EK backplate adds more thermal pads to the PCB directly at the VRM section to help draw more heat off the card, not just the memory alone like the stock plate.
     
CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
OSMonitorKeyboardPower
Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
CaseMouseAudio
Cooler Master HAF 932 Microsoft Wireless Optical Creative 5.1 
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CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
OSMonitorKeyboardPower
Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
CaseMouseAudio
Cooler Master HAF 932 Microsoft Wireless Optical Creative 5.1 
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post #5 of 5
A backplate is, as said above, generally for looks. However, surely a backplate is a good idea to protect your graphics card from CPU/top-mounted radiator leaks!?
For leaks, it seems to be common for water to drop on the back of your graphics card. Not very nice when you spent so much on a 6990. A backplate should provide good insulation to not short-circuit the graphics card if a leak occurs on it.
    
CPUMotherboardGraphicsRAM
Intel Core i7-5820K Haswell-E Asus ROG Rampage V Extreme Intel X99 EVGA GeForce GTX 1080 FTW Corsair Vengeance Red LED 32GB (4x8GB) DDR4-300... 
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Samsung 840 500GB SSD (SATA-6Gbps) Western Digital Black 1TB 64MB Cache HDD (SATA-... Western Digital Black 4TB 64MB Cache HDD (SATA-... NZXT Kraken X52 & 2x Corsair SP120 RGB 120mm Fa... 
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EVGA ACX 3.0 (Graphics Card) 4x Corsair SP120 RGB 120mm Case Fans IC Diamond 7 Carat Thermal Compound Microsoft Windows 10 Home 
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LG Flatron 34UM95-P 34" 3440x1440 21:9 IPS SteelSeries Apex 350 Low Profile RGB EVGA SuperNova G2 1000W Modular Corsair Crystal 570X RGB 
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CPUMotherboardGraphicsRAM
Intel Core i7-5820K Haswell-E Asus ROG Rampage V Extreme Intel X99 EVGA GeForce GTX 1080 FTW Corsair Vengeance Red LED 32GB (4x8GB) DDR4-300... 
Hard DriveHard DriveHard DriveCooling
Samsung 840 500GB SSD (SATA-6Gbps) Western Digital Black 1TB 64MB Cache HDD (SATA-... Western Digital Black 4TB 64MB Cache HDD (SATA-... NZXT Kraken X52 & 2x Corsair SP120 RGB 120mm Fa... 
CoolingCoolingCoolingOS
EVGA ACX 3.0 (Graphics Card) 4x Corsair SP120 RGB 120mm Case Fans IC Diamond 7 Carat Thermal Compound Microsoft Windows 10 Home 
MonitorKeyboardPowerCase
LG Flatron 34UM95-P 34" 3440x1440 21:9 IPS SteelSeries Apex 350 Low Profile RGB EVGA SuperNova G2 1000W Modular Corsair Crystal 570X RGB 
MouseMouse PadAudioAudio
Logitech G502 Proteus Core ModMyMachine SlamePad Aluminium Magnum Champagne Creative Labs Sound Blaster ZxR 2x Acoustic Energy Aego M 2.1 Speakers & 1 Cent... 
AudioOtherOtherOther
Beyerdynamic DT770 Pro 250Ohm Headphones (Dynam... Saitek X-55 Rhino HOTAS Logitech G27 Racing Steering Wheel HTC Vive 
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