try it in a different case first
edit, is it the Xl?
"Performance Analysis
With two large 230mm fans and a 120mm exhaust, we were expecting decent results from the Shinobi XL. It did reasonably well when it came to CPU cooling, reaching a highly respectable delta T of 49°C and placing it above the middle of our current crop of reviewed cases. However, GPU cooling was a very different story.
Our graphics card hit a toasty 70°C, producing a high GPU delta T of 51°C. This made the Shinobi XL the worst performing case we’ve seen when it comes to graphics card, air cooling performance. We were so surprised by this that we dug a little deeper to find where the problem lay, before re-running our tests.
The culprit is the solid front panel, which severely restricts airflow to the 230mm front intake. Despite having an active area of 391cm2 with which to draw in air, the fan only has 57cm2 of potential intake with the front panel in place. This reduction is almost a factor of seven, greatly impacting its cooling abilities. Removing the front panel completely saw GPU temperatures drop by around 5°C degrees, but doing so completely ruins the aesthetic of the case.
Despite the poor GPU temperatures, the two 230mm cooling fans and rear exhuast were very quiet during our testing, with our graphics card easily the loudest thing in the case, but the poor cooling means you’ll almost definitely want to add more fans anyway."
its the same with the standard shinobi as well
"GPU cooling was disappointing as well, with the GPU hitting a Delta T of a whopping 49oC. This is the worst GPU cooling result we’ve yet seen with our current test kit, which means that the Shinobi sits last on our GPU test graph.
The problem is that the graphics card simply isn’t receiving enough air, due to the solid nature of the front panel and the lack of any side ventilation. Granted there are the two meshed channels, which allow in some air, but it’s clearly not enough, at least not without a fan sat behind them actively pulling air through them."
it cant be just the case surely?