G70 is NVIDIA's internal codename for the GeForce 7800 GTX. At this very moment, this is the only graphics card released in the 7x00 range. I'm not doubting there will be many new products later on. But this 7800 GTX is the new flagship, the fastest available. And I know that many of you are wondering if will there be an AGP version. To be honest, at this time and moment NVIDIA has no plans for it. That doesn't mean it'll never happen though as they can use the well known bridge chip (High Speed Interconnect) and make it AGP compatible. Face it, AGP is becoming history.
$ffffffffff --------------------------------------------------- $ffffffffff Display adapter information $ffffffffff --------------------------------------------------- $0000000000 Description : NVIDIA GeForce 7800 GTX $0000000001 Vendor ID : 10de (NVIDIA) $0000000002 Device ID : 0091 $0000000003 Location : bus 5, device 0, function 0 $0000000004 Bus type : PCIE $000000000f PCIE link width : 16x supported, 16x selected
$ffffffffff --------------------------------------------------- $ffffffffff NVIDIA specific display adapter information $ffffffffff --------------------------------------------------- $0100000000 Graphics core : G70 revision A1 (24x1,8vp) $0100000001 Hardwired ID : 0090 (ROM strapped to 0091) $0100000002 Memory bus : 256-bit $0100000003 Memory type : DDR (RAM configuration 07) $0100000004 Memory amount : 262144KB $0100000005 Core clock : 303.750MHz $0100000006 Memory clock : 630.000MHz (1260.000MHz effective)
Let's dig a little deeper into the chip. As you know the number of transistors in the actual silicon gives us a nice idea about performance. Intel's new Pentium 4 6xx series for example have 169 million transistors. The GeForce 6800 already had 222 million transistors. And now the GeForce 7800 GTX has 302 million transistors, crazy huh? It's being manufactured on a 0.11 micron fabrication process.
GeForce 6600 GT
GeForce 6800 GT
GeForce 6800 Ultra
GeForce 7800 GTX
Process, GPU maker
Up to 400 MHz
Up to manufacturer
2 x 550MHz
2 x 500MHz
2 x 600MHz
So what are the major advantages over the Series 6 6800 Ultra? Well, feature wise we are looking pretty much at the same technology. There are a few differences though, which we'll get into later. Overall the 7800 GTX is mostly about increased efficiency and higher performance over the previous generation product.
What is a shader ?
What do we need to render a three dimensional object; 2D on your monitor? We start off by building some sort of structure that has a surface, that surface is being built from triangles and why triangles? They are quick to calculate. How's each triangle being processed? Each triangle has to be transformed according to its relative position and orientation to the viewer. Each of the three vertices the triangle is made up of is transformed to its proper view space position. The next step is to light the triangle by taking the transformed vertices and applying a lighting calculation for every light defined in the scene. At last the triangle needs to be projected to the screen in order to rasterize it. During rasterization the triangle will be shaded and textured.
Graphic processors like the GeForce series are able to perform a certain amount of these tasks. The first generation was able to draw shaded and textured triangles in hardware. The CPU still had the burden to feed the graphics processor with transformed and lit vertices, triangle gradients for shading and texturing, etc. Integrating the triangle setup into the chip logic was the next step and finally even transformation and lighting (TnL) was possible in hardware, reducing the CPU load considerably (GeForce 256). The big disadvantage was that a game programmer had no direct (i.e. program driven) control over transformation, lighting and pixel rendering because all the calculation models were fixed on the chip. And now we finally get to the stage where we can explain Shaders. Vertex and Pixel shaders allow developers to code customized transformation and lighting calculations as well as pixel coloring functionality. Each shader is basically nothing more than a relatively small program executed on the graphics processor to control either vertex or pixel processing.
Normally we see little steps though, yet with 24 pipes, 8 vertex units, a huge transistor count combined with some nice internal hardware optimizations, the boost in performance is noticeable.
Integrated NVIDIA TV Encoder (HDTV, S-Video, Composite,)
Integrated NVIDIA VIVO (S-Video, Composite,)
Dual DVI-I Connectors
38.4 GB per second memory bandwidth
NVIDIA PureVideo Technology
DVD + HDTV Decode assist up to 1920x1080p resolution
Integrated Dual 400MHz RAMDACs
1 Dual Link TMDS DVI Connector
1 Single Link TMDS DVI Connector
NVIDIA Digital Vibrance Control (DVC) 3.0
Support for Microsoft Video Mixer Renderer (VMR)
Advanced adaptive de-interlacing
The first reaction when you look at the architecture of the G70 chip is that it is a prolonged 6800 core. Not entirely true, NVIDIA made some stern changes inside where all that magic happens. According to NVIDIA the internal pipelines were from top to bottom redesigned to make sure there was lower and thus better latency.
This increased performance is for each and any clock cycle. Not only that though, according to NVIDIA the vertex units have been rebuilt to increase geometric performance, a new texture engine accelerates texture processing and there are a number of other things that guarantee better performance. All in all the focus on this design was to increase its shader supremacy as this is where the future of gaming must be found.
Point of View Protab 2 XXL Tablet review Today a review on the ProTAB 2 XXL 10" tablet from Point of View from their Mobi range. With a price of only 169,- EUR the specs are decent enough alright. Interesting enough for graphics, the ProTab2XXL also comes with an additional MALI-400 3D graphics chip. Now we never heard of it before tbh, and very little can found about it on the web. But we can certainly measure it's performance and it does allow for FullHD playback. The Mali graphics chip even allows to drive a mini HDMI v1.4 port.
Point of View GTX 570 TGT Ultra Charged review Today's offering is of course a GTX 570, we nicked it out of the Eindhoven warehouse from the good people at Point of View. See, their TGT team is chunking out several new SKUs based on the GTX 570. Today we'll have a peek at their Ultra Charged model. The UC version is a guaranteed stable factory overclocked product that is overclocked towards a pretty impressive value. See, the default core clock frequency of the GTX 570 is 732 MHz, the TC version is clocked at a blistering 810 MHz, which is a pretty decent overclock. Memory wise spot an increased clock frequency on that 1.2 GB GDDR5 memory as well, taken from 3800 towards 3960 MHz.
Point of View Ion 330 motherboard review We test an ION 330 based motherboard - ION is a relatively low cost GPU assisted solution that will allow this industry on very short notice to have netbooks with full HD playback quality, in multi-channel HD audio. A solution that even supports CUDA and therefore some simple PhysX functionality, but since it's CUDA compatible, it'll also allow encoding and acceleration of popular video content. A platform that supports Gigabit Ethernet, dual-link DVI (high resolution monitors), acceleration in Photoshop CS4 and heck... you can even play a couple of games or make a mini HTPC out of it, it's just really interesting as the product might be little, yet offers a lot.
GeForce 9600 GSO 384 MB review | Point of View NVIDIA replaced the GeForce 8800 GS with the GeForce 9600 GSO. The 9600 GSO is still based on the same G92 core with 96 stream processors that the 8800 GS has, but NVIDIA gave card makers a bit more freedom in their designs in terms of own PCB design to and determine their own clocks. This 'old' card will still have 384 MB of GDDR3 memory over a weird 192-bit memory interface.
Cards like these will sell for less than 99 Euro, and considering the performance you get returned for that, you'll love it.