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7790 or 7850

jonnyp1993

jonnyp1993

jonnyp1993

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Joined
28 Feb 2013
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1,710
Location
Leeds
Hey.
As you know i got offered a 6850 at a good price. The guy sold it to somone else. So im now looking to get a diffrent card.

I only have a budget of around 80 so im looking at a second hand card. Either the 7790 or 7850.

But which one?

Also im not sure if my cx430 corsair psu will power them.

Soooo... any help on rhe psu issue and helping to choose a card :).

Or is there a diffrent card i could get for my money ?

My systen is:

Fx6300 @ 4.1
Asus m5a97 2.0 le atx board
8gb ddr 1600mhz ram
Cm seidon cooler 120mm on push pull

Jonnyp
 
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They're both decent budget cards. Honestly I don't think the extra performance of the 7850 is worth it over the 7790, but it really depends on how cheap you can get them second hand. If the 7850 can play X game at X settings with decent framerate then the 7790 can as well.

Regarding the psu, bear in mind the corsair cx430 has 336w on the 12v rail. This is perfecly fine for anything up to a 7850/gtx660 paired with a low power cpu. However I think that a fx6300 @ 4.1ghz might push it a bit too close for comfort.

I've seen a few reviews showing it use almost 100w more than a 3570k when under full load but others show it using only an extra 30 or so :/
 
7850 is pretty decent i've just got rid of one, but it managed crysis 3 on medium with no dramas, bioshock infinate on high, borderlands 2 on high (no physx) nice little card for the money
 
7850 has a good 25-35% lead on the 7790. Add in a reasonable overclock and you're looking at 50-60% over the stock 7790. Plus twice the memory. The 7850 is not a budget card.

I've had no problems running a 4770K at 4.3GHz and a 7850 overclocked as high as it'd go, absolutely stable on a 350W PSU.
 
teppic said:
7850 has a good 25-35% lead on the 7790. Add in a reasonable overclock and you're looking at 50-60% over the stock 7790. Plus twice the memory. The 7850 is not a budget card.

I've had no problems running a 4770K at 4.3GHz and a 7850 overclocked as high as it'd go, absolutely stable on a 350W PSU.
Click to expand...

Don't forget the 7790 can be overclocked too :) They also come in 2gb models for under 100 pounds. If the 7850 is £30+ more expensive I'd definitely go with a 7790. I'm currently using a 7770 and find it very capable for 1920x1080 having used much more powerful cards beforehand.

If the reviews that show a stock 6300 using almost 100w more than a stock 3570k are true then OP's overclocked 6300 with a 7850 would be getting close to 300w, very close to the cx430's max rating. Your system is unlikely to be breaking 200w, overclocking AMD cpu's has a much bigger impact on their power consumption.
 
Hard decision here lol. I would be overclocking the card so maybe the 7850 is the best way togo.

As for my cpu. 4.1 is the boost but i have clocked it with the multi not the boost option.

I will have alook tonight to see what power its using under load.

Thanks for the help guys :)
 
Ok, well a stock 8350 with all 8 cores going at 4GHz + standard boost of 4.2GHz has a TDP of 125W, so 6 cores at 4.1GHz max full out will obviously be lower.
 
If your going to up grade you should get the best you can afford at the time i.e. the 7850 but as previously stated it will be pushing your psi to the limit so if it was me i would also save for a psu upgrade.

Believe me I have suffered with an overloaded psu that went bang and it is a bad feeling that you don't want to have and you could be risking the whole of your system if the worst happens.
 
teppic said:
Looks like rubbish. If you take those figures as correct, the 3470 is drawing around -10W at full load :)
Click to expand...

Actually their 3470 result seems correct. I have one, just checked its power consumption and its 43w full load. The difference on that chart between idle and load is 35w. Add a couple of watts for idle power consumption and its spot on.

http://i43.tinypic.com/wv1mqf.png
 
spixelspixel said:
Actually their 3470 result seems correct. I have one, just checked its power consumption and its 43w full load. The difference on that chart between idle and load is 35w. Add a couple of watts for idle power consumption and its spot on.

http://i43.tinypic.com/wv1mqf.png
Click to expand...

I wasn't really questioning their 3470 result, rather the 6300 result makes no sense unless the system is using an extraordinary amount of power (which would make the 3470 results impossible). According to that, the system at idle is using more than the CPU's full TDP, but just running the stock CPU at load is adding on much more than the CPU's full TDP on top of the system's very high idle use. techreport's 8350 review has that 8 core CPU at 4GHz using a peak system power of 196w - slightly higher than hardwarecanucks's review, but far more consistent and believable.
 
teppic said:
I wasn't really questioning their 3470 result, rather the 6300 result makes no sense unless the system is using an extraordinary amount of power (which would make the 3470 results impossible). According to that, the system at idle is using more than the CPU's full TDP, but just running the stock CPU at load is adding on much more than the CPU's full TDP on top of the system's very high idle use. techreport's 8350 review has that 8 core CPU at 4GHz using a peak system power of 196w - slightly higher than hardwarecanucks's review, but far more consistent and believable.
Click to expand...


You may be right.. all I know is that some AMD cpu's are much more power hungry than intel :)

The cx430 will definitely handle the 6300 + 7850 if the cpu is left stock, but overclocking them both might push the psu close to its limits.

When I hit 4.6 with the FX-6300, it jumped around 60 watts at the wall.
Click to expand...
 
Price dictates here, although the 7850 is the better card I would be factoring in power consumption and overall second hand value.

Is is rather annoying when OP posts "I have £80" then people creep up the budget just to win their hypothetical argument.

If you can pickup the 7850 for the budget - get it! Otherwise a 77*0 will do as it's not far behind, consumes less power and will probably be cheaper.

:)
 
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