is a 300w psu good enough to run a radeon hd 7750?

GeneralJim25 · Apr 9, 2013

is a 300w psu good enough to run a radeon hd 7750? im building a pc for my little brother, and he prefers it be more like an xbox then a giant hulking space waster. im looking at m-ITX cases on Tigerdirect (cheaper shipping for me) and the highest power supply in their cases is 300w. so will that power a hd 7750 and say an a8 apu?

Feldmarschall · Apr 9, 2013

Hi,
It all depends on what kind of A8 (5600K 100W or 5500 65W) you are using and what kind of PSU is there for reall.
If it is good PSU then you are ok to go with both of these combos. By good i mean you'll need at least 15A on 12V rail of efficient, constant output to run strongest combination (5600k + 7750) without any worries.

Feldmarschall · Apr 9, 2013

This PSU would be nice for your rig. http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7758019&CatId=4324

g00fysmiley · Apr 9, 2013

7750 has a tpd of 55 watts , even if it is a 100 watt version then you have 145 watts remaining so provided it is a decent psu then yes 300 watts will be sufficient

GeneralJim25 · Apr 9, 2013

Feldmarschall :

this is the case i have picked out. it comes with the aforementioned 300w psu.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=6011720&sku=YYD1-IWBP655300TBL80

what do u think?

Feldmarschall · Apr 9, 2013

Just went through IN WIN's power supplies and every one 300W unit they have on web will do the job for you.
You should be ok to go

GeneralJim25 · Apr 9, 2013

awesome lol thats good to hear

now i dont have to waste money on a new psu... atleast i hope i dont. what do you think of this setup? a10 5800k, HD 7750 (crossfiring with the APU), and 8 gigs of ram? what settings do u think i could hit on those. as far i can tell the 5800k also uses 100w. im trying to build my little brother the best computer i can for the price and form factor.

Feldmarschall · Apr 9, 2013

To be honest, i don't know if it is possible at all to crossfire those. Many posts point that you can't. http://www.amd.com/us/products/technologies/dual-graphics/Pages/dual-graphics.aspx#3
Including AMD official site.

GeneralJim25 · Apr 9, 2013

Feldmarschall :

i read somewhere they can crossfire up to the 7790

Feldmarschall · Apr 9, 2013

Can't really help you with that. Never saw that anyone did it yet.
Altough you may try since Passmark score is better for single 7750 than strongest crossfire option A10+6670. So if you go with this, you can only get bonus if you manage to crossfire them.
http://www.videocardbenchmark.net/gpu.php?gpu=Radeon+HD+7750
http://www.videocardbenchmark.net/gpu.php?gpu=Radeon+HD+7660D+%2B+6670+Dual

GeneralJim25 · Apr 9, 2013

Feldmarschall :

seriously?

Feldmarschall · Apr 9, 2013

I'm affraid so.
Can you provide that link which was reffering to crossfire up to 7790?

jaguarskx · Apr 9, 2013

Crossfire only works up to the Radeon HD 6670 or HD 7670. The HD 7670 is the same card as the HD 6670 with a different name and is not sold to consumers directly.

Installing a Radeon HD 7750 or more powerful card will disable XFire.

Regarding PassMark... I and most other people usually ignore those synthetic benchmarks because they have proven to be inaccurate in the past. Better than nothing I suppose, but I consider it a waste of time looking at the numbers.

Crossfiring a the Radeon HD 7660D (A10-5800k's iGPU) and a Radeon HD 6670 will provide less performance than a single Radeon HD 7750 graphics card. The Radeon HD 7660D is only a little better than a desktop Radeon HD 5570 which is pretty weak.

The Radeon HD 7750 is equal to a Radeon HD 6770 and is 50% more powerful than Radeon HD 6670. You probably need to Crossfire two Radeon HD 6670 to equal the performance of a Radeon HD 6770 / HD 7750.

g00fysmiley · Apr 9, 2013

nto the same as crossfiring, but if you can find a motherboard with a lucid chip you can mix gpu's and does not even have to be the same brand or type. my wife is rocking a 7770 with a gts 450 because i already had the 450 and the 770 was a good deal with the motherboard

Wisecracker · Apr 9, 2013

Rumors have it that the Richland APU may run dual-graphics with Cape Verdi GCN cards but it will be a month or so before we find out.

You need to purchase the fastest RAMs available within your budget ...

The speed bump scales in near-linear fashion. As far as dual-graphics:

This is mobile, but I suspect similar scaling wold apply on the desktop APUs ...

mo7amed3211 · Apr 9, 2013

can my 400w PSU handle hd 7770 ???

my PSU 400w (no name) all i can find on it is (Digital)

it handled 9500 gt which is using 50watt and hd 7770 is using 80watt that's 30w more...do you think it can handle it or should i buy a new PSU?

Feldmarschall · Apr 9, 2013

mo7amed3211 :

Hi,
It would be best to start your on topic, that way you are going to get all answers you need from multiple experts.

mo7amed3211 · Apr 9, 2013

Feldmarschall :

i just made one 42 minutes and no one answered

is a 300w psu good enough to run a radeon hd 7750?

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