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Radeon HD 5870 CF?

post #1 of 17
Thread Starter 
I'm new to all this computer building/hardware and just threw together my first rig a couple weeks ago and I'm thinking about adding in another XFX Radeon HD 5870 and crossfiring. I always set video settings in all games to max and I notice my FPS does drop down to around 25-30 quite a bit (mainly in WoW) and it bothers me.

Since 5870 CF ($500) is pretty equal to a 5970 ($1000), CF is looking delicious. I've heard of folks having a lot of trouble with CF and that there's a lot of cons. I don't want to drop another $250 into my system just to be disappointed.

I'm getting really excited for The Old Republic and Battlefield 3 (crazy-awesome new engine). I want to run all my games (and the new ones coming out this year) with maxed settings but still have super high FPS. Should I wait for new cards to come out and use a single GPU or CF my current one? Am I (or would I be) bottle-necking at all with my current setup? What do you guys think?
Edited by Max FPS - 2/20/11 at 1:48pm
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post #2 of 17
If you want max fps another 5870 will absolutely annihilate any game. BUT. Regarding WOW, it doesn't support CF so you'll see no improvement. Also What resolution are you playing at?

Also is your 1090T overclocked at all?
Edited by IzninjaFTW - 2/20/11 at 1:31pm
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post #3 of 17
Thread Starter 
Quote:
Originally Posted by IzninjaFTW View Post
If you want max fps another 5870 will absolutely annihilate any game. BUT. Regarding WOW, it doesn't support CF so you'll see no improvement. Also What resolution are you playing at?

Also is your 1090T overclocked at all?
My max resolution for my monitor is 1440x900. And I'm not a fan yet of overclocking. As I said, I'm fairly new to all of this stuff and I'm afraid I'm gonna burn something up or cause damage. Not comfortable with running anything hotter. I don't really want to spend any money on custom cooling so I'd like to keep my stock heatsink/fans.

But yeah, I heard there's a lot of games that don't support CF. Which pushes me further in the direction of having a single GPU. But I'm hoping all the games out there will be updated to support it AND for all the new games to support it by default. I don't know if multi-GPU support is going to be the norm sometime soon for all games or what...
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post #4 of 17
With that resolution it wouldn't really be beneficial to get a second or third card. The higher the resolution the more the GPU is used. And regarding cooling, I wasn't saying you should buy after market coolers for each card I meant make sure you have enough air blowing on the cards. Also i'm not sure if your case can accommodate three GPUs seems like airflow would be not so great.
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post #5 of 17
Quote:
Originally Posted by Max FPS View Post
My max resolution for my monitor is 1440x900. And I'm not a fan yet of overclocking. As I said, I'm fairly new to all of this stuff and I'm afraid I'm gonna burn something up or cause damage. Not comfortable with running anything hotter. I don't really want to spend any money on custom cooling so I'd like to keep my stock heatsink/fans.

But yeah, I heard there's a lot of games that don't support CF. Which pushes me further in the direction of having a single GPU. But I'm hoping all the games out there will be updated to support it AND for all the new games to support it by default. I don't know if multi-GPU support is going to be the norm sometime soon for all games or what...
You should really consider going with Nvidia on this one, try a GTX580, you wont regret it and you will see very large performance increases in all of your games.
post #6 of 17
overclocking is fine on stock cooling up to 3.8GHZ. with your 1090T turbocore it automatically oc's the first 3 cores to 3.5GHz or so. bit if you do want your best potential you should OC it to 4.0GHz.

the 5870 is fine on it own in terms of game playing at your resolution so i wouldnt bother getting another 5870. besides, CF'ing comes with headaches with its drivers.
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post #7 of 17
Thread Starter 
Quote:
Originally Posted by IzninjaFTW View Post
With that resolution it wouldn't really be beneficial to get a second or third card. The higher the resolution the more the GPU is used. And regarding cooling, I wasn't saying you should buy after market coolers for each card I meant make sure you have enough air blowing on the cards. Also i'm not sure if your case can accommodate three GPUs seems like airflow would be not so great.
Yeah I knew what you meant, I was just explaining why I didn't want to overclock since you asked if my processor was OCed.

But anyways, if I did get a second card, wouldn't that boost my FPS/performance no matter what monitor I'm using? I'm planning on upgrading to a 1080p 120hz monitor eventually anyway.
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Western Digital 750GB SATA LITE-ON CD/DVD Burner Microsoft Windows 7 Home Premium 64-bit 23" ASUS VH236H HD 1080p LED LCD 
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AMD Phenom II X6 1090T Black Edition Thuban MSi 870A-G54 2x XFX ATI Radeon HD 5870 1GB in CF G.SKILL NS 8GB DDR3 
Hard DriveOptical DriveOSMonitor
Western Digital 750GB SATA LITE-ON CD/DVD Burner Microsoft Windows 7 Home Premium 64-bit 23" ASUS VH236H HD 1080p LED LCD 
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post #8 of 17
Quote:
Originally Posted by Max FPS View Post
Yeah I knew what you meant, I was just explaining why I didn't want to overclock since you asked if my processor was OCed.

But anyways, if I did get a second card, wouldn't that boost my FPS/performance no matter what monitor I'm using? I'm planning on upgrading to a 1080p 120hz monitor eventually anyway.
yes if you got a 1080P monitor, getting another 5870 will help tremendously.
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post #9 of 17
My vote goes for getting either a GTX570/580 or radeon 6950 and unlock it to 6970 levels

Crossfiring brings so many headaches unless you get it right, so imo single card solutions are the bees knees so to speak
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post #10 of 17
At your rez, I wouldn't consider another 5870 "required". The 5870 is a very good card, despite being a generation old now.

However, if you go ahead and get a 1080p or higher screen, a second 5870 will definitely help. Some of the more demanding games (Metro 2033, Crysis, etc.) will stress the best high end cards to the point of needing a Crossfire or SLI buddy to keep eye candy and frame rates high.

But don't forget, adding a second card means you'll have to pay attention to profiles because of the dual GPUs. While I only have a single GTX 580 right now (and therefore can't speak of any SLI issues), my CrossFire setup was downright terrible in regards to drivers. In single card configuration, it was a much different, happier story. Food for thought.
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