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GeForce GTX 760 Review: GK104 Shows Up (And Off) At £210

GeForce GTX 760 Review: GK104 Shows Up (And Off) At £210
By , Igor Wallossek

With its last graphics card introduction until the end of Fall, Nvidia isn't trying to impress anyone with groundbreaking performance. Rather, the company is pulling better-than GeForce GTX 660 Ti-class frame rates to a £210 price point, creating value.

In the last four months, we watched Nvidia revamp its high-end graphics card line-up using year-old GPUs based on the Kepler architecture. Hey, I’m not hating. GK110 wasn’t even available to desktop gamers prior to the GeForce GTX Titan’s introduction. And while I wasn’t a huge fan of GeForce GTX 780, I certainly “got” the reason for a cut-back version of the £800 flagship. GeForce GTX 770 was a more practical introduction, replacing GeForce GTX 680 with a little extra speed at a dramatically lower price—and the rebranded GK104-based board earned our Smart Buy award as a result.

And now we have another graphics card based on GK104 to test: the GeForce GTX 760. In case you’re counting, that makes an astounding six models based on one GPU (GeForce GTX 690, 680, 670, 660 Ti, 770, and now the 760). Talk about getting your mileage worth.

Of course, those six boards utilize GK104 in varying configurations, from its full 1536 CUDA cores down to 1344. Actually, there was an OEM-only GeForce GTX 660 that Nvidia launched last year with 1152 CUDA cores (or just six of the GPU’s eight total SMX blocks) enabled...

GK104 Rides Again

...and that’s the arrangement being introduced today. Nvidia enables six of GK104’s eight Streaming Multiprocessors across three or four of its Graphics Processing Clusters. This is similar to the approach taken on GeForce GTX 780, equipped with a trimmed GK110 GPU. In essence, the company doesn’t always know which of its chips’ resources are going to be defective. So, it can turn off two SMXes in one GPC or one SMX in two different GPCs. 

In either case, you end up with 1152 total CUDA cores and 96 texture units. GK104’s back-end remains intact though, consisting of four ROP clusters that output eight 32-bit integer pixels per clock each, maxing out at 32. Similarly, four 64-bit memory controllers create a 256-bit aggregate interface.

At least at first, GeForce GTX 760s will sport 2 GB of GDDR5 memory operating at 1502 MHz, just like the GeForce GTX 670 and 680, pushing up to 192.2 GB/s. This is probably the 760's biggest advantage against GeForce GTX 660 Ti. A 192-bit memory bus limits that card's bandwidth to 144.2 GB/s, which hurts at higher resolutions with anti-aliasing cranked up.

GeForce GTX 760 also compensates for a less-complex GPU configuration through higher core clock rates. Its GK104 runs at 980 MHz (base), but is rated for a GPU Boost clock rate of 1033 MHz. That’s more aggressive than GeForce GTX 660 Ti and 670, both armed with 1344-shader incarnations of GK104 set at a 915 MHz base frequency. What you're going to see in the benchmarks is that some workloads tend to favor shader count, others react to the GPU's clock rate, and a third group enjoys memory bandwidth.

Meet Nvidia’s Reference GeForce GTX 760

I really grew to admire the GeForce GTX 770 that Nvidia sent over for review. The reference design featured the same sleek thermal solution as GeForce GTX Titan on a product I could actually afford. But Nvidia’s board partners deviated from that configuration unanimously, going to market mostly with two-or three-fan coolers, which I frankly don’t care for as much.

It looks like the same thing is going to happen with GeForce GTX 760. The reference card appears identical to GeForce GTX 670. We also received four partner boards, though, and they all lean on proprietary heat sink and fan combinations. This doesn’t bother me so much. Whereas I was a big fan of the 770’s aluminum shroud, polycarbonate window, and heat-exhausting centrifugal fan, the 760’s plastic cooler isn’t as hard to part ways with.  

Nevertheless, the reference GeForce GTX 760 is 9.5” long; its PCB only accounts for 6.75” of that. Nvidia claims that the 760’s scaled-back power requirements allowed it to move voltage regulation circuitry to the other (left) side of the GPU.

We remain fans of centrifugal blowers for their ability to push waste heat out of your case, rather than recirculating it. Unfortunately, board partners seem less concerned about this, and are using axial fans able to spin more quietly at the expense of carefully directed cooling.

Despite its two deactivated SMXes, GeForce GTX 760 sports the same 170 W maximum graphics card power rating as GeForce GTX 670. That’s 25 W less than GeForce GTX 680 and 60 W less than the more recently-introduced GeForce GTX 770, both of which employ the same GK104 processor. Since a 16-lane PCI Express slot only delivers 75 W of power, you still need two six-pin auxiliary connectors to drive the GTX 760.

The 760 offers the same four display outputs seen on all of Nvidia’s other 600- and 700-series cards lately: two dual-link DVI connectors (one DVI-I and one DVI-D), one full-sized HDMI output, and one full-sized DisplayPort connector. All four can be active simultaneously, partly addressing AMD’s Eyefinity technology, which we’ve seen enable up to six screens on one card.

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  • 0 Hide
    bemused_fred , 25 June 2013 14:43
    I'm a little annoyed that we didn't see any comparison of the overclocked cards. Both this card and its nearest competitor the HD 7950 overclock like bosses, and such a feature would be crucial for deciding between these two. It would've been really great to see a quick page on game performance between these two cards at their maximum stable overclocks, as this would give a full picture on their performance for overclocking consumers.
  • 0 Hide
    sam_p_lay , 25 June 2013 14:48
    Maybe because there's no guarantees with overclocking. It's always a gamble how high the one you get will actually go.
  • 0 Hide
    mi1ez , 25 June 2013 16:56
    When did coolers that exhaust heat outside of your case go out of fashion?
  • 0 Hide
    anxiousinfusion , 25 June 2013 17:05
    We need a response-Radeon HD 8970 stat.
  • 0 Hide
    dark_wizzie , 25 June 2013 17:56
    Why not run Skyrim with graphical mods on? That's what I'll be doing as soon as I get a new card.
  • 0 Hide
    bemused_fred , 25 June 2013 20:55
    Quote:
    When did coolers that exhaust heat outside of your case go out of fashion?


    Ever since axial fans provided better thermals with less noise. That's when.
  • 0 Hide
    mi1ez , 26 June 2013 08:11
    Quote:
    Quote:
    When did coolers that exhaust heat outside of your case go out of fashion?


    Ever since axial fans provided better thermals with less noise. That's when.


    So use an axial fan and exhaust it out the back!
  • 0 Hide
    bemused_fred , 26 June 2013 09:23
    Quote:

    So use an axial fan and exhaust it out the back!


    I don't think you quite understand how axials work....

    https://en.wikipedia.org/wiki/Mechanical_fan#Axial-flow_fans
  • 0 Hide
    mi1ez , 26 June 2013 16:39
    Quote:
    Quote:

    So use an axial fan and exhaust it out the back!


    I don't think you quite understand how axials work....

    https://en.wikipedia.org/wiki/Mechanical_fan#Axial-flow_fans


    I know how axial fans work.

    And is there any reason not to have an axial fan mounted diagonally at one end of the board pushing air along the card?
  • 0 Hide
    chriss000 , 28 June 2013 23:00
    Ah! Only a measly £210 ? I will take a bakers dozen! HA HA HA , Seriously. . how is this progress? Gtx 460 launched at what? 180? dropped to 140 ish soon after...
    760 launches at £210? No way hose would I spend that.
  • 0 Hide
    chriss000 , 29 June 2013 02:17
    Also, isnt it about time this gpu heat problem was addressed?
    A pokey mainstream desktop cpu creates 100 odd watts of heat, but graphics cards can create 200.+, and you might have more than one.
    Yet the gpu slots are below the CPU AND below the ram? and everything else, come to think of it? Who ARE these 'eggheads' who get together and decide pc standards?
    Are they like the idiots from the TEFAL adds? Cool air should enter at the bottom and cool the most critical heat sensitive components first, (cpu/ ram/bridge chips)and make its way out at the top past and via the gpu's, and psu's that should have fan assistance and extra ventilation from the front or side of case. Early 775 cases with induct horns for the cpu wer excellent examples of this.
    Thoughts anyone?
  • 0 Hide
    WeD@ , 16 August 2013 23:37
    us version: "GK104 Shows Up (And Off) At $250", which is 160£
    http://www.tomshardware.com/reviews/geforce-gtx-760-review-gk104,3542.html
  • 0 Hide
    mi1ez , 17 August 2013 22:24
    Quote:
    Also, isnt it about time this gpu heat problem was addressed?
    A pokey mainstream desktop cpu creates 100 odd watts of heat, but graphics cards can create 200.+, and you might have more than one.
    Yet the gpu slots are below the CPU AND below the ram? and everything else, come to think of it? Who ARE these 'eggheads' who get together and decide pc standards?
    Are they like the idiots from the TEFAL adds? Cool air should enter at the bottom and cool the most critical heat sensitive components first, (cpu/ ram/bridge chips)and make its way out at the top past and via the gpu's, and psu's that should have fan assistance and extra ventilation from the front or side of case. Early 775 cases with induct horns for the cpu wer excellent examples of this.
    Thoughts anyone?


    The ATX standard was created long before we had 200W+ GPUs. Was it BTX that was designed to combat the issues?