nakup grafične kartice Ati vs. Geforce ;)

Lepo pozdravljeni!

Svojo radeonko 3650 512mb mislim kmalu zamenjati in me zanima katero bolj priporočate:
-ati radeon 5750 http://www.mimovrste.com/artikel/263006...
-geforce 250;.http://www.mimovrste.com/artikel/263005...

hvala za odgovor in lep pozdrav :)



Računalnik
Intel pentium xeon e5400 2700mhz
2gb ram 800mhz ddr2
450w napajalnik
ekran lcd lg flatron L1919s
miška ;)

+1 za hd5770 142EUR http://www.pctrgovina.com/trg/detajl.ph...
Ali pa hd4890 158EUR http://www.pctrgovina.com/trg/detajl.ph...
Pa še nov napajalnik(če je ta en no name 450w!

Kupi 5770 za 30EUR vec ter 70% boljsi performans...Kupi pa jo pri odnesi.si ker je novejši model z boljšim hlajenjem.!!

Biti sami po sebi nimajo veze, ker ima 5770 vec coreov in hitrejsi ram = vecja prepustnost.

Naceloma ce bi samo to primerjal je 250 hitrejsa od 5770, ko pa pogledas celoto, pa core, pa hitrost rama pa DX11 + tessellation pa Shader5 250 ostane zadaj...

s forumov:

The amount of bits of memory by itself doesn't tell you anything about the performance of the card. You need to get total memory bandwidth (bits x effective speed in Mhz, which depends on the type of GDDR used) to get a meaningful number and even then its nowhere near a good indicative of performance

The bus (128 or 256-bit) is what connects the memory to the GPU (im pretty sure) but basicly the bigger the bus is the more data can get through. but the 4770 uses very fast GDDR5 SO for instance you could have a 9800GT with a 256-bit Bus and 512mb of GDDR3 and you have a ATI 4770 with a 128-bit bus and 512mb of GDDR5.

since GDDR5 is newer and is wayy faster than GDDR3 the card with GDDR5 and a 128-bit bus will win.


256bit bus vs 128bit bus only matters if the memory types are the same. GDDR3 vs GDDR5, GDDR3 is dual data rate and GDDR5 is quad data rate, meaning GDDR5 can have half the bus width and will have the same bandwidth of a GDDR3 of the same clockspeed.

GDDR5 transfers twice the amount of data compared to GDDR3, hence it would equivalent to doubling bus width.

A 128bit GDDR5 cards performs SIMILAR (not equal) to a GDDR3 256bit.
Depends on what you are doing that the difference will be bigger or smaller. On heavily textured areas IIRC the bigger bus sees an edge, on the rest the GDDR5 will match the GDDR3.

The power consumption differences are mostly on the architecture, if it is a 40nm card it will consume less than a 55nm one.

GDDR5 will add more heat and consumption than GDDR3.

A bigger bus consumes more than the smaller one.

It is a matter of balance. If you ask me, get GDDR5, more future proof, and the faster speed does pay.


Memory interface size shouldnt be the only thing you consider when buying a GPU, as its just one of many things that contribute to the overall performance. For example, a 256-bit 8800gt has gddr3 memory and a total memory bandwidth of 57 GB/sec. The ATI 5770 only has a 128-bit interface, but it uses gddr5 memory and a total memory bandwidth of 77 GB/sec. My best advice is to not shop for graphics cards based on their newegg specs, but to go and look and benchmark charts and see which cards outperform which, and then make a decision from there.


razlozeno:
http://www.associatedcontent.com/articl...


primerjava HD 5770 in 250
http://www.gpureview.com/show_cards.php...
http://www.tomshardware.com/reviews/bes...
http://www.videocardbenchmark.net/gpu_l...


Pa ce vzames 5770 Vapor-X bo neslisna, 250 pa ne. Pa DX11, shader 5 in prihodnost...


je pa res, da ce mas kako staro plato se zna zgodit da bos mel probleme in potem prvo flashi bios in ce se vedno ne dela lahko kartico vrnes v 14ih dnev BP.