Compatibility GIGABYTE GA-EP43-DS3 with a GTX 750 Ti

tslav.vla
What's the problem, it has 1xPCI-E x16 standard 2.0 . Bet and don't think, but at least the gtx 1080 (well, for the CPU is extremely weak).
I read a lot of information about PCI ports and stuff and it just aggravated my doubts - it's hard to say what exactly is complicated? For video cards need PCI-Express x16, and the standard is now 2.0, but in 1.0 it will work. 3.0 (modern) 2.0 went close. There are other types of (X1, X4, X8).
You need X16
In General, you're going to change video cards, don't even think about it, he deluded himself into.
If the issue is version compatibility PCI-E x16 interface standards 1.0, 2.0 (you have such), 3.0, please:
Spoletini question of concern to many, especially when choosing a video card for your current system. As with a system with a motherboard that supports PCI-Express 1.0, there are doubts whether correctly working graphics card with PCI-Express 2.0 or 3.0? Yes, it will, at least as promised by the developers, which provided the most compatibility. The only thing is that the graphics card will not be able to fully open in all its glory, but the loss of performance in most cases will be negligible.Quite the opposite, you can calmly install a graphics card with PCI-E 1.0, motherboard that support PCI-E 3.0 or 2.0, then nothing is limited, so be sure about compatibility. Unless, of course, other factors are in order to those are not powerful enough power supply, etc.

Bring an extra power connector because the transmitted power from the PCI bus may not be enough.

+ change the CPU to a Zeon E5xxx (see on youtube), with Aliexpress order for +/- 1200 RUB.
Спойлерhttps://ru.aliexpress.com/item/Original-E5420-2-5GHz-12M-1333Mhz-CPU-equal-to-LGA775-works-on-LGA775-with-two-PCS/32599778706.html
+ And change the RAM to sell (up to 8 GB if needed)
Спойлерhttps://ru.aliexpress.com/item/Brand-New-Sealed-DDR2-800-Mhz-667Mhz-533Mhz-PC2-6400-1GB-2GB-4GB-for-Desktop-RAM/32366977636.html

750 Ti for the platform on 775, 4-core CPUs, the ceiling. Only Zeon-th is the reason for its continued existence. Hence, it will not open the card!

That is, if I understand correctly, I will need to buy the graphics card the power supply is more powerful, Zeon E5xxx and operatives at will, then all will be well?

Philips_Original
Thanks for the answer, please explain in detail what do you mean not open card? Now the old card Radeon 1950 pro is not drawn at all (reheated to the critical temperature from the first Witcher only established, when downloading took off, Mount & Blade. With fire and sword for about 15-20 minutes is also up to 100 heats, crashes) new video card will also work if the processor does not change or I something misunderstood? Although This old Radeon, it should work.

tslav.vla
You do not need a new PSU, that's enough. Enough of BP and 400 watts, it by the way it should in the recommended for graphics card. PSU 450 watts is more than enough.
Calculation:(CPU) 65 W + (video card) 60 W + (Mat. fee) 25 W + (peripherals and HDD) 100 watts (that's a lot, BUT let it be) = 250 watts., multiply by a margin of 10-30%, namely * 0,3 = 75, then 250+75=325 watts. The PSU is 350 watts enough.
that means do not reveal the card? - Primitive: the more powerful the graphics card, the more demanding it is to the processor, i.e. they are tied, the load processor is, and if you put a powerful video card, the processor may ultimately Balk at the possibilities, and the graphics card may be underutilized.
No need to rush to change and to sort out the system once we decide, then take the card and look in there performance. Your task is to see the numbers the workload of the GPU or video card and the CPU. The percentage of load for the video card should be close to 100%, likewise if the CPU is close to 100%, IT is likely he is not able to reveal the graphics card.
How to make sure, then you will quickly change. With Philips_Original I won't argue, the conversation will remain between you, I just recommend to check, maybe not in this sense. Although 2-core processors are already out.
a new video card will also work if the processor is not to change or something I misunderstood? - wrong. This cooling system. I don't know how you have this card and in what conditions it works, but will throw the options. Causes of high temperature can be MANY: the virus load video card (and system load); thermal grease (Google it and what is needed) is dry and does not hold as before the heat between processor and heatsink, as a result, overheating; the radiator is clogged with dust, dust is a thermal insulator, and we are not talking about fine dust, it is layers, clods of dust; broken fan - broken, well here is clear, the poorly ventilated case - case fans coined for a reason; there's another reason this is a purely manufacturer no offense guys, correct me if I'm wrong, earlier stood Radeon high temperatures, often I hear the words stove, 'll be warm, high fever and it touched and AMD (AMD Radeon, right?).
Maybe that has changed today. For graphics cards is the max of 95 degrees acceptable, no more than 80 (72-76). Great 65-72.
So long as you have it, and what you need to look to affect the temperature, see for yourself. By the way, sometimes a new graphics card thermal grease not much.
On a new graphics card temperature will be the other, unless, of course, will not be impacted by the same factors as on the Radeon, BUT be sure that it will definitely lower (see factory figures, according to specifications, this graphics card).
In order to follow them, often recommend utility - Msi Afterburner (in the same installer and Rivatuner Statistics Server, set both). If need be, tells how to use it.
P. S. Read I will need to buy the graphics card the power supply is more powerful, and message above, no you did not recommend to change PSU. You recommend to buy a graphics card with extra power, apparently there is a model 750 TI without it. Ie see:
For example, an excerpt from staticat who have already changed the graphics card, understands that simply insert into the PCIe slot is not always enough. Modern video adapters in most cases require a separate connection to the computer power supply. The reason is simple: the PCI Express can supply the map only 75 watts of power, and for most models this is not enough.
And yet, the graphics card without a connector to plug additional power exist. They will be especially useful to those users who have a number of wires from the power supply is limited to a small number. As a perfect example, the affordable ready PC from Russian discounters and small companies, because they mostly use cheap power supplies. We will give you a couple of tips that can be useful when buying.
To you extremely recommend to TAKE (and I agree), graphics card with additional power from the PSU, PAY ATTENTION TO IT when buying.

most likely the Radeon is dry thermoplastics (although I have not met) or pollution. operating temperatures there may be 80-90g.
750 ti processor can not only pull if you do not play with screen resolutions close to modern as it is comparable to the epic 2 smart cards and possibly faster. but the meaning to find some sort of ifors 280 or Radeon 4890 or any 640-740ю the plug then no. will not open so the performance in the game will be determined by the processor and the graphics card will hang not fully loaded. of the game to work worse than they can't but it will usually say on the feasibility of such a system because you can buy something more germanskoe without compromising ultimate performance..

Thanks for the replies, special thanks to VOVAN WOLF for the great detailed explanations, I'm going to buy a graphics card.