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GTX 750 Ti or R9 270X


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10 replies to this topic

#1 siganos

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Posted 06 September 2014 - 04:36 PM

  Hi everyone this is my first thread in this site so i apologize for any bad info.

 

I am interested in upgrading my gpu,currently i have sapphire 6770 and initially i was interested in getting the nvidia 750ti (2gb) because my psu is only 500 watt 80% efficient and the gtx requires only 60 watt.I can also buy the AMD R9 270X(2gb) because there are respectable differences in benchmarks but i dont know if my psu is enough as the 270x requires a lot of power.I cant buy a new psu as well because my budget is tight.On one hand the 750 ti is based on the brand new maxwell architecture and is a safe choise for my pc cause of the power problem,on the other hand the 270X gives an average of ~15 more fps from 750 on high settings but i dont know if my psu can handle it.Also i found that the 270 requires less power than the 270x and the difference in fps is about 5-8 fps.So what want to know is which gpu should i pick for my specific rig having in my mind that my psu kind of sucks? :P 

--Prices in my country

270x -> 175 € 
270 -> 160 € 
750ti -> 135 €
--Benchmarks:
270 vs 270x
http://www.anandtech.com/bench/product/1043?vs=1080
750ti vs 270 
http://www.anandtech.com/bench/product/1130?vs=1080
--My pc:
CPU:Intel Core i5 2400 3.10GHz
RAM:8,00GB Dual-Channel DDR3
MOBO:Gigabyte Technology Co., Ltd. P67A-D3-B3
PSU:Thermaltake tr2 Q-fan 500w ATX 12v 2.3 80 % efficient


Edited by siganos, 07 September 2014 - 04:05 PM.


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#2 synergy513

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Posted 06 September 2014 - 05:44 PM

i would go with the 750ti with that power supply, the 270x is too demanding, it needs 180 watts and two 6 pins and don't forget about the 12v amps that feed the  PCI power plugs., chances are that a 500w will be struggling if not insufficient with a 270x.

 

but if you prefer the AMD line-up like some enthusiasts do, check out the r7 265, it requires one 6 pin (110 watts) and is basically a 7850 from the previous generation.

 

http://pcpartpicker.com/parts/video-card/#sort=a8&c=168


Edited by synergy513, 06 September 2014 - 05:45 PM.

Moore's Law : 4d Graph in Progress


#3 siganos

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Posted 06 September 2014 - 07:09 PM

Well you just turned my world upside-down :P , the difference in price is only 10 euros and as is see here : http://www.anandtech.com/bench/product/1127?vs=1130    there is a respectable diferrence in fps .So do you think that my psu can handle r7 265 or will it be overstressed on higher settings?

Thanks for the reply i appreciate it!


Edited by siganos, 07 September 2014 - 05:45 PM.


#4 synergy513

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Posted 06 September 2014 - 10:58 PM

i would be confident that the r7 265 will be efficient in your configuration. it is a wonderful spot to be in,  256 bit gddr5 and only needing one 6 pin and easy on the budget also. there are different models though with different plugins so be sure to look for the one that has the plug-ins you desire. i mean things like dvi-i and hdmi and d-sub analog vga etc.

 

now if your power supply was a feable 350 watt or something, then the 750 or 750ti would be a definite.

 

i forgot to look up the pc part picker that deals with european merchants, i saw this one out of DE:

 

http://de.pcpartpicker.com/parts/video-card/#c=168


Edited by synergy513, 06 September 2014 - 11:07 PM.

Moore's Law : 4d Graph in Progress


#5 siganos

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Posted 07 September 2014 - 07:25 PM

I seriously dont know...My friends tell me that the 265 isnt worth because its based on an old card and i should buy the r9 270x. Can my pc handle the normal 270? Do you think that  265 will handle new games for 2-3 years on medium-high (1680x1050) ?


Edited by siganos, 07 September 2014 - 07:26 PM.


#6 jonuk76

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Posted 07 September 2014 - 08:10 PM

They're all based on older cards.  They all use the "Pitcairn" chip which came out in 2012.  It's just that in 2012 these were somewhat high end cards and priced accordingly.  They're now cheaper.

 

The R9-270X is a HD7870 with a faster clock rate and faster memory. 

The R9-270 is a HD7870 with a lower clock rate and faster memory (in standard form it performs the same as the old HD7870).

The R7-265 is a HD7850 with faster clock rate and faster memory.

 

The HD7850 differed from the HD7870 in the number of shaders enabled (1024 vs. 1280), texture memory units (64 vs. 80) as well as clock rates.  These differences are also present between the R7-265 and R9-270/X.

 

FWIW I can't see why your PC shouldn't handle a R9 270.

 

Also still in stores you might find the GTX 660 which performs in the same ballpark as the AMD R9-270 (therefore a bit quicker than the GTX 750 Ti).  It's also relatively power efficient.

 

Power use chart of most of them


Edited by jonuk76, 07 September 2014 - 08:25 PM.

7sbvuf-6.png


#7 siganos

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Posted 07 September 2014 - 08:23 PM

Wont my psu be inssuficient on high settings in games with the 270x? The GTX 660 has almost the same performance in games and is more expensive so i dont see the point in paying more and not getting a r9-270 , i only hestitate for the power problem.


Edited by siganos, 07 September 2014 - 08:27 PM.


#8 jonuk76

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Posted 07 September 2014 - 08:58 PM

I don't know what your local prices are.  Where I am, I've seen the GTX 660 going for more or less than a R9-270.  Prices are volatile :)

 

Well lets see, you've got a 500w PSU that according to the specs can output 36 Amps (432 watts) at 12v, across two rails.  The GPU & CPU are powered by the 12v rails.

 

Your CPU we can assume draws around 95 watts at absolute maximum load.

I think a reasonable guestimate for power required for the motherboard, memory etc is about 40 watts or so.  (Sandy Bridge power consumption tests)

About 10 watts for a hard drive.

A few watts for each fan.

 

The maximum power draw of the GPU comes in at (according to Techpowerup)

 

GTX 750 Ti - 66 watts

GTX 660 - 138 watts

R7 265 - 132 watts

R9 270 - 138 watts

R9 270X - 172 watts

 

Overclocked parts running at higher than standard speeds will draw more.  Obviously this is just a very approximate way of looking at it, and in no way definitive but it looks to me like it should be within limits.   If you want a better way of doing it try a PSU calculator.


7sbvuf-6.png


#9 siganos

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Posted 08 September 2014 - 07:44 AM

Using the psu calculator i had the following results:

 

with the R7 265 on high end mobo and 100% peak load(p.s. adjusments) i need   360 watt

with the R9 260X and the same setting in need 413 watt

with the r9 270 i need 400 watt.

 

So could it handle 270x with no danger of frying it, or should go with the safer 265 ?

 

Thanks for the replies guys!


Edited by siganos, 08 September 2014 - 09:22 AM.


#10 siganos

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Posted 08 September 2014 - 10:14 AM

Ok i kept digging and from what i could find i think the 270 would be a good and pretty much a safe choise for my psu because it requirems only 1 6 pin connector. 

synergy513 jonuk76

 what do you think ?



#11 jonuk76

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Posted 08 September 2014 - 10:41 AM

I think it would be fine.  No-one on the internet can guarantee it will be fine.  A PSU can fail at any time.  But IMO based on the information available it looks OK.  The PSU calculator is recommending a 400 watt PSU, you have a 500 watt PSU.

 

The HD 6770 you are replacing has a TDP of 108 watts so an R9-270 is a very modest increased power draw by comparison. 


7sbvuf-6.png





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