Upgrading HD7870 to GTX 690? + Side question about power supply

DavejaVous

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Jul 16, 2015
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4,510
Currently I have the following in my system:

■ AMD A8-5600K CPU
Overclocked to 4.2 GHz
■ ASRock FM2-A75-M DGS Mobo
■ 2 x 4GB DDR3 @ 1333MHz
■ VTX3D HD 7870 Black Edition 2GB Graphics Card
Overclocked to 1200MHz base, 1600Mhz memory and +20% power
■ Corsair RM 750 PSU (The yellow one, not the 750i or 750x)

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My most commonly played games are:
TF2, CSGO, 7 Days to Die, GTA V, Borderlands 2 and Planetside 2

I play Arma 3 but rarely due to its terrible AMD optimisation.

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I want to upgrade my graphics card as it is getting weak, has sub-60fps in most games and has terrible screen tearing issues, but I only have about £200 (just under $250) to spend on a new one. I would however, only be able to buy from UK/EU retailers as postage from other parts of the world would be ridiculously expensive.

One of the cards I was looking at was the GTX 690 - It probably seems to be an unusual choice but compared to my current card, it blows it out of the water spec-wise and should give me a noticeable improvement and can be found for about £100 on eBay.

What are your thoughts? Is there another card that you guys would recommend?

Secondly, the GTX 690 has a TDP of 300W, which concerns me. Some calculators quote a PSU recommendation of 1000W+, whereas others say that a 500W+ PSU would suit fine.

It's all a bit contradictory, so if someone could give a more definitive answer on how suitable my 750W PSU is, it would be much appreciated.

Many thanks for any help and feedback you can provide :D
Dave


Edit:

I should probably add that I want to move to an intel+nvidia setup over time.

Playing ARMA 3 at 9fps which is lower than my friends old celeron laptop is insulting. A lot of games generally tend to be better optimised for intel and nvidia setups.
 
Solution
Easiest is to buy a new CPU, keep your current gpu for now.
New: i3 6100+ H110 mobo, 8GB DDR4 ram
Used: used i5 3570k or anything better, matching board, use your current ram.
7870 is a r9 270x, which is quite good for 1080p. Overclock that.

Ryan_78

Honorable
preferably, it would be nice to save upa nd get a whole new rig completely. the A8 and 7870 are quite well matched pair. If you were to upgrade the GPU without overclocking the CPU past 4.8 GHz or getting a new CPU, the A8 is a small bottleneck for the 690, which is in short, 2 GTX 960 or 950tis.
endure on and get a new rig. New as in a whole new setup.
if you still want to upgrade get a GTX 1050 or an RX 460. save the rest for a good CPU.
in my opinion though, get a new rig.

and hello fellow planetman

and keep in mind a usual 600w PSU has 46 amps on the 12v rail
 

DavejaVous

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Jul 16, 2015
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With some extra research I've found that ARMA's problems are mainly from the CPU being AMD, rather than the problem lying with the graphics card.

I have found an RX 480 8GB for £230, which isn't too much over my original budget.

If I were to upgrade my CPU in the future then it would almost have to be Intel if I wanted to play ARMA.

I would probably save up about £200-250 (~$250-300) for it and the motherboard.
What CPU + Mobo would you recommend?
 

Ryan_78

Honorable
Easiest is to buy a new CPU, keep your current gpu for now.
New: i3 6100+ H110 mobo, 8GB DDR4 ram
Used: used i5 3570k or anything better, matching board, use your current ram.
7870 is a r9 270x, which is quite good for 1080p. Overclock that.
 
Solution