Overclock.net › Forums › Graphics Cards › AMD/ATI › Thinking about adding a 5870 to my 5850, need some advice....
New Posts  All Forums:Forum Nav:

Thinking about adding a 5870 to my 5850, need some advice....

post #1 of 9
Thread Starter 
I'm putting together my new Sandy Bridge 2500k / Asus P8P67 rig. I already have a 5850 that's clocks 900/1250 with absolutely no problems, and I now I have the chance to buy an almost new XFX non-reference 5870 for $160CAD/$170 CAD depending on if I get it mailed or delivered, I just have a couple of questions/concerns before I pull the trigger....

1. My new board only does 16x/4x crossfire, from what I researched the 4x doesn't affect crossfire performance, what are your thoughts?

2. Since I my 5850 ocs to above 5870 clock speeds, would it bottleneck the 5870 that much?

3. Which card should I use as the primary on the 16x lane? Would the non-reference cooler of the XFX come into consideration?

4. I'm using three 32" 720p TVs for eyefinity resolution of 4080x768. It looks fantastic but I'd like to have higher AA in newer games like Crysis 2 and Shift 2 and then eventually BF3 since my resolution is inherently limited. My 5850 struggles a bit, would this new setup allow me to do my resolution with good AA with ease?

5. Is this a good price for 5870? lol

Thanks in advance guys, any help would be appreciated.
post #2 of 9
Sounds like a good price to me, seems a bit lower than most Ebay deals. You can mod an 5850 to 5870 using a bios mod usually they're the same but the 5850 comes with lower clocks.
post #3 of 9
4x should be ok you might lose a few % of perf and you cant mod a 5850 to a 5870 you can just overclock it to that speed cant add the missing shaders. I would run the 5870 in the top spot and put the 5870 in the 4x slot you might be able to set both your pcie slots to 8x im not sure.
SABERWOLF
(18 items)
 
XEON-WOLF
(18 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-6800K MSI X99A GAMING PRO CARBON EVGA GTX 1080 FTW Hydro Copper G.SKILL TridentZ Series 
Hard DriveCoolingCoolingCooling
Samsung EVO 850 500 EK-SBAY Dual DDC 3.2 PWM Serial Alphacool NexXxoS ST30 Full Copper Radiator 360 Hardware Labs Black Ice SR2 Multiport Black Car... 
CoolingCoolingOSMonitor
EK-CoolStream RAD XTC 420 koolance 380i Windows 10 Pro ASUS VW246H Black 24" 2ms 
PowerCaseMouseAudio
SeaSonic M12D SS-850 850W  Thermaltake core x71 CM Storm Sentinel Advance II Corsair Void 
CPUMotherboardGraphicsRAM
X5675@4400 1.344 ASUS P6X58D-E XfX RX480 RS F3-12800CL7T-6GBPI 6-7-6-21 1T 
RAMHard DriveHard DriveHard Drive
F3-12800CL9S-4GBRL WDC WD1001FALS-00J7B1 ST31000340AS WDC WD7500AAKS-00RBA0 
Hard DriveOptical DriveCoolingOS
Hitachi HDS723020BLA642 ihas 624-A SilverStone Heligon HE01 windows 10 64 Pro 
MonitorPowerCase
Vizio 42inch lcd tv CORSAIR CMPSU-950TX Modded Rocketfish 
  hide details  
Reply
SABERWOLF
(18 items)
 
XEON-WOLF
(18 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-6800K MSI X99A GAMING PRO CARBON EVGA GTX 1080 FTW Hydro Copper G.SKILL TridentZ Series 
Hard DriveCoolingCoolingCooling
Samsung EVO 850 500 EK-SBAY Dual DDC 3.2 PWM Serial Alphacool NexXxoS ST30 Full Copper Radiator 360 Hardware Labs Black Ice SR2 Multiport Black Car... 
CoolingCoolingOSMonitor
EK-CoolStream RAD XTC 420 koolance 380i Windows 10 Pro ASUS VW246H Black 24" 2ms 
PowerCaseMouseAudio
SeaSonic M12D SS-850 850W  Thermaltake core x71 CM Storm Sentinel Advance II Corsair Void 
CPUMotherboardGraphicsRAM
X5675@4400 1.344 ASUS P6X58D-E XfX RX480 RS F3-12800CL7T-6GBPI 6-7-6-21 1T 
RAMHard DriveHard DriveHard Drive
F3-12800CL9S-4GBRL WDC WD1001FALS-00J7B1 ST31000340AS WDC WD7500AAKS-00RBA0 
Hard DriveOptical DriveCoolingOS
Hitachi HDS723020BLA642 ihas 624-A SilverStone Heligon HE01 windows 10 64 Pro 
MonitorPowerCase
Vizio 42inch lcd tv CORSAIR CMPSU-950TX Modded Rocketfish 
  hide details  
Reply
post #4 of 9
I considered adding a 5850 to my 5870 back when I had one. The problem with the setup is that for all extents the 5870 acts like a 5850. You're better off getting another 5850 if you can find one. The 5870 + 5850 was also a few frames slower then 5850 xfire in all the benches I had seen. All in all though if you cant get a 5850 for cheaper go for it.
Robit
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X6 1090t ASUS Crosshair IV Formula MSI 6870 G.Skill Ripjaws 4GB DDR3 @ 1800mhz 
Hard DriveOptical DriveOSKeyboard
OCZ Agility 60GB, WD Caviar Black 1TB ASUS Black 2MB Cache DVD Burner Windows 7 Ultimate 64bit Logitech G15 
PowerCaseMouse
Kingwin Lazer 1000W Modular 80 Plus Active PFC Cooler Master Storm Scout Razer Copperhead / Microsoft Siderwinder 
  hide details  
Reply
Robit
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X6 1090t ASUS Crosshair IV Formula MSI 6870 G.Skill Ripjaws 4GB DDR3 @ 1800mhz 
Hard DriveOptical DriveOSKeyboard
OCZ Agility 60GB, WD Caviar Black 1TB ASUS Black 2MB Cache DVD Burner Windows 7 Ultimate 64bit Logitech G15 
PowerCaseMouse
Kingwin Lazer 1000W Modular 80 Plus Active PFC Cooler Master Storm Scout Razer Copperhead / Microsoft Siderwinder 
  hide details  
Reply
post #5 of 9
Thread Starter 
Quote:
Originally Posted by Bal3Wolf View Post
4x should be ok you might lose a few % of perf and you cant mod a 5850 to a 5870 you can just overclock it to that speed cant add the missing shaders. I would run the 5870 in the top spot and put the 5870 in the 4x slot you might be able to set both your pcie slots to 8x im not sure.
You said 5870 twice lol, which one do you recommend on top? Pretty sure my board can only do 16/4, it's the P8P67 Pro/Deluxe that can do 8x/8x

Quote:
Originally Posted by Vap0r87 View Post
I considered adding a 5850 to my 5870 back when I had one. The problem with the setup is that for all extents the 5870 acts like a 5850. You're better off getting another 5850 if you can find one. The 5870 + 5850 was also a few frames slower then 5850 xfire in all the benches I had seen. All in all though if you cant get a 5850 for cheaper go for it.
I've read the Legit Review article that I think you're speaking of, however I think they had both cards at stock, my 5850 clocks above 5870 stock speeds, think that makes a difference?
p.s. also I can get a 5850 for like 20 bucks less, so I thought the 5870 would be more worth it
Edited by divertiti - 4/24/11 at 11:17am
post #6 of 9
There is a cheap sapphire 5850 on newegg http://www.newegg.com/Product/Produc...82E16814102932 that may be a better option for you.

And I may be wrong on this but I'm pretty sure you get more AA options in CCC when you go crossfire.
Wintermute
(14 items)
 
  
CPUMotherboardGraphicsRAM
I7-2600k ASROC P67 Extreme 6 2x GTX 670 2GB 2x 4GB Gskill 1600 8-8-8-24 
Hard DriveOptical DriveCoolingOS
OCZ Vertex 60GB + 2xWD640 AALS raid0 LG BD-ROM Corsair H100 Win 7 Home 64 
MonitorKeyboardPowerCase
Dell 23" Blackwidow Ultimate Corsair TX850 N/A 
Mouse
Deathadder + Steel Series Xai 
  hide details  
Reply
Wintermute
(14 items)
 
  
CPUMotherboardGraphicsRAM
I7-2600k ASROC P67 Extreme 6 2x GTX 670 2GB 2x 4GB Gskill 1600 8-8-8-24 
Hard DriveOptical DriveCoolingOS
OCZ Vertex 60GB + 2xWD640 AALS raid0 LG BD-ROM Corsair H100 Win 7 Home 64 
MonitorKeyboardPowerCase
Dell 23" Blackwidow Ultimate Corsair TX850 N/A 
Mouse
Deathadder + Steel Series Xai 
  hide details  
Reply
post #7 of 9
Thread Starter 
Quote:
Originally Posted by Ioxa View Post
There is a cheap sapphire 5850 on newegg http://www.newegg.com/Product/Produc...82E16814102932 that may be a better option for you.

And I may be wrong on this but I'm pretty sure you get more AA options in CCC when you go crossfire.
I don't know if newegg.com ships to canada, even if they do I'd end up paying $160 with taxes, not cheaper than the 5870 really
post #8 of 9
Quote:
Originally Posted by divertiti View Post
I don't know if newegg.com ships to canada, even if they do I'd end up paying $160 with taxes, not cheaper than the 5870 really
http://www.newegg.ca/Product/Product...82E16814102932

Cheaper no, but if you want crossfire 2 5850s are a better option. Or if you really want that 5870 you could sell your 5850 and pickup another 5870.
Wintermute
(14 items)
 
  
CPUMotherboardGraphicsRAM
I7-2600k ASROC P67 Extreme 6 2x GTX 670 2GB 2x 4GB Gskill 1600 8-8-8-24 
Hard DriveOptical DriveCoolingOS
OCZ Vertex 60GB + 2xWD640 AALS raid0 LG BD-ROM Corsair H100 Win 7 Home 64 
MonitorKeyboardPowerCase
Dell 23" Blackwidow Ultimate Corsair TX850 N/A 
Mouse
Deathadder + Steel Series Xai 
  hide details  
Reply
Wintermute
(14 items)
 
  
CPUMotherboardGraphicsRAM
I7-2600k ASROC P67 Extreme 6 2x GTX 670 2GB 2x 4GB Gskill 1600 8-8-8-24 
Hard DriveOptical DriveCoolingOS
OCZ Vertex 60GB + 2xWD640 AALS raid0 LG BD-ROM Corsair H100 Win 7 Home 64 
MonitorKeyboardPowerCase
Dell 23" Blackwidow Ultimate Corsair TX850 N/A 
Mouse
Deathadder + Steel Series Xai 
  hide details  
Reply
post #9 of 9
I've got a 5870 + 5850 crossfire setup and the 5850 doesn't seem to hold the 5870 at all since in both games and bench marks they both run at 99%.

Here's a vantage screenshot:



Running at 8X + 8X.
Edited by Willhemmens - 4/24/11 at 12:14pm
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › Thinking about adding a 5870 to my 5850, need some advice....