Intel i7-860 When do I have to worry about upgrading?

You have to say your Budget. Your current GPU is actually not a gaming GPU so you will have to ditch it . If money is an issue you should overclock Your CPU to get more performance But you Must really Get a gaming GPU in order to get decent FPS in any game. Without stating what you are willing to pay none can help you
Check this Out
http://www.tomshardware.com/reviews/gaming-cpu-review-overclock,3106-5.html

If you OC you should be ok...hasfail is not that much better than IB, so if you skipped that, you might as well skip the 1% gaming performance increase, and higher power consumption that is IB v2...err...hasfail.

Get a HD 7950 or GTX 670 or something and call it good.

Definitely upgrade that gpu. Like 8350rocks stated, the 7950 or 670 are well priced for their performance.

Games rely on your gpu and although your cpu is important and can create a bottleneck in your situation your gpu is staggering your performance.

It will be better to read this:
http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107.html
Or say what you are willing to pay and what's your resolution, In fact you better list all your system's Current specifications.

Then you should go buy something like the Radeon HD 7950 for around $300.00 That shouldn't pose any serious issues with a bottleneck and would run most things on high settings without issue.

I'm concerned with your resolution And Your PSU and the amount of money you are willing to spend. Why? Because there is no need to get a 7970 GHz for 1600X1200 resolution and you can't run 7970GHz on a 350W PSU .....not to mention that i can't Recommend a GPU you can't afford by the way how much memory (RAM) you have?

current specs would help greatly.. ESP psu and whether you have an aftermarket cooler

I had an i7-860:

When I bought my GTX 680 I still had my i7-860 system. I did several benchmarks in anticipation of my new i7-3770K system and the results were that many games noticeably improved (many by up to 25%). I have lots of games though that already ran at 60FPS at full quality with my i7-860 + GTX680 so the i7-3770K didn't matter anyway.

It's far better for you to buy the best graphics card (and Power Supply) you can afford if you can't afford the money for a new system AND a top-end graphics card. An i7-860 + HD7950 is far better than an i7-4770K and an HD7770 for gaming.

An HD7950 (and the free games) is probably the best value. My advice is get one of those and a quality 550W or 650W PSU. (you can always upgrade the rest of your system later if need be).

Recommended graphics card:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202003

Recommended PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151106

*Do NOT skimp on the PSU. If you want a different one then do your research. The general rule of thumb for gaming is to make sure the proper connectors are there for the graphics card but also read customer reviews (did it fail? too loud?).

A quality PSU is an investment so get a good solid one and it should last.

definitely upgrade that gpu

freaking double post

Haswell for the upgradability, ONLY if from MC.

Otherwise, IB or SB.

to give you an idea, I am using an i7 920 with 2 5870's in crossfire . I still see no need to upgrade the cpu. only reason I will be upgrading is ddr4 and sata express when they come out. other than that, there is no point... gpu I do actually plan to upgrade next year ( I have been waiting fro a 50-100% gain from my 2 5870's in a single card and I think next year I will see that. )take form that what you will. I do hope it helps

My advice is to spend up to $450 on the best single-GPU graphics card you can afford.

Here's a LONG answer which I hope provides you enough information to help.

If you see my discussion above you'll see that I got a maximum of 25% of so by upgrading from CPU to an i7-3770K (about the same as an i5-3570K or i5-4670K or i7-4770K for gaming).

It's a lot of money to upgrade the entire system so I agree just getting the graphics card makes sense.

My advice:
MINIMUM: HD7870 2GB
MAXIMUM: GTX770

The AMD cards have the advantage of free game downloads but no matter which card you get, make sure the cooling solution and customer reviews are good.

About "$" after MIR/tax/shipping:

$225
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121649

$320
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127734

$410
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121770

Analysis:
A lot of it comes down to budget. Also look at the digital games included with the AMD cards. I do have to point one really IMPORTANT POINT though. The GTX770 is the first card I feel comfortable recommending for SLI due to improvements to minimize micro-stutter. You may not go that way but if you decide to build a new system while the GTX770 is still available it's an option. I don't have the link but they did extensive tests for that (called "frame time" tests).

Games vary a lot. Many will run great on any card here. Be very careful to TWEAK. Achieve a higher frame rate rather cranking up the visuals. With a good card you should aim for 60FPS (monitor with FRAPS) at least 90% of the time.

Specific tweaks:
Battlefield 3: disable "deferred anti-aliasing"

Far Cry 3:
- disable anti-aliasing (it appears to be doing some already, but I'm unsure if that requires an NVidia GTX600 or GTX700 series)
- 1 buffer each for GPU and VSYNC (the wrong number here produces massive stuttering)
*Far Cry 3 is a weird game to optimize. With my faster-than-stock GTX680 it ran like crap until I disabled AA then I could run everything else at the highest at 1080p. However the LOWEST settings are still quite demanding so you need a pretty good card to hit 60FPS. (Your CPU will also be a factor of course).

Summary:
- Get the best single-GPU card you can afford (keep in mind many people getting mid-range cards like an HD7870 upgrade far sooner so a GTX770 may give you better value long-term).

- Sell your system in a year or two (not the card if it's a good one). Maybe SIX physical cores will be optimal by then? Who knows. Go mainly by benchmarks to determine value of the newer CPU's.

- GTX770 has significant improvements for SLI to minimize micro-stutter based on recent tests

- AMD HD7950 has a good game package (if you were going to buy those games anyway) so is arguably the best value

You may find this article very interesting. I recommend reading the entire thing but I linked to the PERFORMANCE SUMMARY:
http://www.techpowerup.com/reviews/ASUS/GeForce_GTX_770_Direct_Cu_II_OC/27.html

Points:
1) Micro-stutter has been tested as minimized on the GTX770 more than any other setup (I can't even recommend AMD Crossfire at all).
2) The GTX780 costs 54% more for 10% more performance
3) This particular Asus design appears to be the best by far (VRM cooler, backplate, heat-pipes, double-sealed fans)

With free digital games, the AMD cards are pretty impressive in value (though I usually buy with Steam later for much cheaper). Games aside, this particular card is an incredible value at $420 (though you'll have to WAIT a little while). I suspect the price is going to go up. That's what happened to the Asus GTX670's.