Which is better to buy? R7 or HD 7xxx series

ErkanMali · Feb 20, 2014

I have i5 2300, HD 6450 with 350W PSU. I want to get rid off the HD 6450. Since I live in Turkey, GPU selection is kinda limited. Here is the list of what is best for me:

POWERCOLOR HD7730 2GB GDDR3
GIGABYTE HD7750 2GB DDR3
SAPPHIRE HD7770 1GB GDDR5
POWERCOLOR R7 250 O.C. 1GB GDDR5

What I am trying to compare is the power usage. Since I have a limited PSU these seem fine to me. I made research on the net and many claim that HD7770 can work on 350W PSU. I also want to take notice on power consumption. I am having fine electricity bill at the end of the month but don't want to see a huge increase in the bill after buying those cards. Also do DDR3s consume less power than DDR5?

ModernWarfare · Feb 20, 2014

r7 250 is a newer version of 7770. gddr5 is alot better in memory than ddr3 350watts may not be enough. its not all about watts its about amps to. dont know what kind of 350psu you have answer if you know.

AshyCFC · Feb 20, 2014

DDR3 don't consume less than GDDR5, GDDR5 cards are much faster than DDR3.

What 350W PSU is it? If It's a good one then maybe.

If I had to choose out of these cards not knowing what PSU you're using i'd choose the R7 250 GDDR5 1GB.

The 7750 is faster than the R7 250 IF you find a GDDR5 version of the 7750.

The R7 250 IS NOT the replace for the 7770, The R7 250X is the 7770 replacement. The R7 250 is in between the 7730 and 7750 in terms of speed.

Chart rating their gaming performance in % against the benchmark speed of the R7 250(which is why it is 100%)

The GDDR5 7750 is on average 63% faster, or so Tomshardware reviews found.

ErkanMali · Feb 20, 2014

I will give more update about my PSU when I am at home. I will take picture and send it here.

AshyCFC · Feb 20, 2014

Okay, that's a very good thank you.

If you can post the model as well since sometimes it's hard to read would be great.

ErkanMali · Feb 20, 2014

I found the HD7750 DDR5 model but it is the same price as HD7770

if had the sufficient PSU I will immediately buy HD7770.

ModernWarfare · Feb 20, 2014

yea i own x2 crossfire hd 7770's its really good performance also i wouldnt install anything with that psu if its cheap.

ErkanMali · Feb 20, 2014

ModernWarfare :

What do you mean buy install anything?

ModernWarfare · Feb 20, 2014

i mean by installing a graphics card with that psu is bad.

AshyCFC · Feb 20, 2014

basically.

Putting a 7770/7750/R7 250 in a system with a cheap generic no name PSU is a bad idea, If the PSU fails it can damage your whole system.

ModernWarfare · Feb 20, 2014

exactly.

AshyCFC · Feb 20, 2014

By the way, Just so you know if the PSU is a cheap generic 350w (most likely) You'll need to upgrade it before I can recommend putting in a new GPU.

ErkanMali · Feb 20, 2014

I guess I have to make choice well thanks anyway.

AshyCFC · Feb 20, 2014

Yeah + we aren't sure if the 350w is that bad yet. Chin up.

odiervr · Feb 20, 2014

If it's a Dell PSU - you are good. They are very good.

Erkan Mali · Feb 20, 2014

Here is my PSU. Unfornuately it was 300W PSU not 350W :/
Also this is my main profile, I created the topic with something else instead.

AshyCFC · Feb 20, 2014

Sorry to say, that PSU is not good enough. It only has 19A on the 12V rail, with 12A required for the HD 7770 your whole system will probably take up more than the 19A it give out.

Erkan Mali · Feb 20, 2014

Alright thanks for the info, must get a new PSU asap.

AshyCFC · Feb 20, 2014

See if you can find a XFX 450W or a Corsair 430W CX430(this is the cheapest PSU i can recommend) the XFX unit would be ideal.

If there's any other's you've got your eye feel free to post them here.

Which is better to buy? R7 or HD 7xxx series

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